September 24

WIDI Master: Start Guide

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Step 1: Plug your WIDI Master into your MIDI device

WIDI Master consists of two parts: one is the large main adapter, which is used to get power from the MIDI OUT DIN connector and to transmit MIDI messages wirelessly.

The other is the small sub adapter, which is used to receive MIDI messages on the MIDI IN DIN connector of the MIDI device.

The large main adapter can work completely standalone. The small sub adapter always needs the large main adapter to function.

To get started, plug the 2.5mm mini-jack plug of the WIDI Master's small sub adapter into the mini-jack socket of the large main adapter.

If your MIDI device only has a MIDI OUT DIN connector, it is not necessary to connect the mini-jack plug and sub adapter to the large main adapter. The large main adapter can function completely independently.

Then plug the main adapter of WIDI Master into the MIDI OUT DIN connector of your MIDI device. If needed, plug the small sub adapter into the MIDI IN DIN connector.

Watch the video below explaining this process.

Step 2: Confirm blue LED indicator is flashing slowly

Now that you have connected your WIDI Master, all you need to do is confirm that the blue LED is flashing slowly. If yes, then everything is normal and you are ready to establish a connection.

If you have two WIDI devices, they are automatically linked together. One of the LED indicators turns turquoise and the other remains constant blue. When you send a message, both LED indicators respond. This means everything is working properly.

When this is the first time you turn on your WIDI Master, please proceed to updating its firmware first. The auto-pairing mentioned earlier occupies your WIDI for this process. To avoid auto-pairing at this stage, simply enable a single WIDI device to get started.

If there is no LED indicator at all, your MIDI device may not be supplying power through the MIDI Out. Check if your device is listed on the open source compatibility list.

If you are sure that you have connected your WIDI Master correctly and there is no LED indicator, your alternative solution is WIDI Jack + DIN-5 cables.

WIDI Jack has an external power option via USB-C and the ability to work with non-powered MIDI ports, including devices with only MIDI In ports.

Note the different states of the LED indicator for your reference:

  • Blue LED flashes slowly: the device starts normally and waits for connection.
  • Blue LED light stays on constantly: the device has been successfully connected.
  • Blue LED flashes quickly: the device is connected and is receiving or sending MIDI messages.
  • Light blue (turquoise) LED: the device has (automatically) taken on the central role and is connected to one or more peripherals.
  • Green LED: The device is in firmware upgrade mode. Use the iOS or Android WIDI App to connect and upgrade the firmware.

Watch the video to visually see the difference between the LED indicator states.

Step 3: Update firmware via WIDI App

WIDI App is a free tool for iOS and Android and runs on your mobile device. It is not available on Windows or macOS computers.

Basically it is used for three main operations:

  1. Upgrade firmware
  2. Personalise settings
  3. Set up groups
Download WIDI App

In this step you just follow the procedure for updating your WIDI firmware. For all other operations, feel welcome to refer to the WIDI App manual.

To get started, first download the WIDI app for iOS or Android.

Connect with WIDI App

After installing WIDI App, turn on the Bluetooth and location information switches in your mobile device's system settings.

After that, make sure that the distance between the device and the WIDI product is no more than 10 meters (33 feet).

Keep in mind that there are many different mobile devices that all work in a slightly different way. Make sure to follow the exact steps as described here to make the process easier.

  1. Connect your WIDI Master as described in the previous step to power it on and make sure it is not connected to other Bluetooth MIDI devices.
  2. Confirm that the status of your WIDI Master's LED is blue and blinking slowly.
  3. Connect your mobile device to the internet and launch WIDI App
  4. WIDI App will automatically scan for all nearby WIDI devices available for connection and display them in the list.
    Note: If you have multiple WIDI devices active and they are not listed, they have automatically paired to each other and will no longer be advertising to pair with WIDI App. Make sure to enable only one WIDI device at this stage.
  5. Click the name of the WIDI device for which you want to update the firmware.
  6. WIDI App will pop up a [Bluetooth Pairing Request] prompt window. Please click [Pair] to connect and enter the details page of the WIDI device.

If it is the first time to run WIDI App, it may pop up [Allow WIDI to use wireless data?] and [Allow WIDI to access this device’s location?] prompt windows.

In this case please click [Wireless LAN and cellular network] or [Wireless LAN only], and [Always Allow] location information (this item is necessary for connecting Bluetooth MIDI devices for setting and upgrading permissions).

Update firmware

After connecting your WIDI Master to WIDI App, the device details page will be opened. Next, WIDI App will automatically detect if you need to update the Bluetooth firmware.

  1. In the pop-up window you can select [Update Bluetooth Firmware]. If there is no pop-up, scroll down and click [Update Bluetooth Firmware] at the bottom of the device details page.
  2. The previous operation will open the firmware details page. Now you can select the firmware version and click [Start].
  3. The update process starts automatically and lasts for 2 minutes with a steady progress.
  4. The progress bar will show the firmware download and writing progress in real time. You can confirm, the LED light of your WIDI device will turn green during the process and flash quickly.
  5. After the Bluetooth firmware is updated, click [OK]. Your WIDI Master will automatically restart with the new firmware, and WIDI App will automatically return to the device list page.
    Note: As an optional extra step, do a factory reset to ensure all settings are back to default. This can be the solution if you have encountered problems before.

Please take your time to watch the full process via the videos below. If you find yourself stuck in firmware mode or experiencing abnormal connection times, you probably need to clear your mobile device's Bluetooth cache as described in step 4.

Auto-connect on iOS 16 (and above)

Apple has introduced auto-connect after first pairing with WIDI devices since iOS 16 (and above). If you only use your iOS device for updating, be sure to turn off Bluetooth after completing the process and/or remove WIDI devices from your general Bluetooth list.

This is to avoid problems or other confusion with your WIDI group configurations and automatic connection procedures between WIDI devices.

Unable to connect with WIDI App

Some MIDI devices may not be able to reliably power WIDI devices through their MIDI OUT port. This may prevent WIDI App from obtaining device information when you connect to your WIDI device.

This may even cause a complete failure during the firmware upgrade. If you encounter such a situation, connect your WIDI device to another available MIDI device and try again.

Update firmware via iOS
Update firmware via Android

Step 4: Clear Bluetooth cache of your mobile device

Your mobile device is a perfect device for Bluetooth. That said, Bluetooth MIDI is a pretty special way to use Bluetooth technology. Both Android and iOS devices prioritize basic consumer-level operations over your niche music production operations with Bluetooth MIDI.

It is important to understand that if you are having trouble connecting to your WIDI device, for instance after updating the WIDI firmware, it is highly recommended that you follow a simple procedure to reset your device's Bluetooth cache.

  1. Open your mobile device's general Bluetooth settings.
  2. Remove all existing WIDI devices from this general list.
  3. Turn Bluetooth off and on again to reset the Bluetooth cache..
    Note: In some cases, you may even need to reboot your mobile device.
  4. Your mobile device is now ready to establish a new connection.
    Note: If you still encounter problems during the update process, refer to this troubleshooting page.
Stuck in firmware mode

If you were stuck in the firmware upgrade process of your WIDI Master, after clearing its Bluetooth cache as mentioned above, open WIDI App again and the process should restart automatically.

After deleting the Bluetooth cache and upgrading your WIDI Master, you are ready for the next step.

Watch the videos below with a detailed description on how to clear Bluetooth cache for iOS or Android.

No connection with WIDI App

WIDI Master is powered through your MIDI device's MIDI Out port. In rare cases, your MIDI device does not provide enough power WIDI App will not be able to provide your WIDI device details.

In that case, contact support for further assistance. Your solution might be to switch to WIDI Jack + 5-pin DIN cables with external power via USB-C.

Clear Bluetooth cache for iOS
Clear Bluetooth cache for Android

Step 5: Configure your Bluetooth MIDI connection

Now that you've plugged in your WIDI Master, made sure it's powered on properly, and updated the Bluetooth firmware, your WIDI Master should flash its blue LED slowly.

This means it is ready to use and available to connect wirelessly via Bluetooth. As you may understand, there are many ways to implement WIDI in your MIDI setup.

When establishing a wireless connection for the first time, always ensure that your WIDI device(s) are available for connection and not (accidentally) occupied via an automatic connection to another device such as your mobile device or another Bluetooth MIDI device.

In summary, there are the following scenarios:

It is strongly recommended that you follow the procedure exactly to set up your preferred scenario. After you understand the difference between automatic pairing and manual pairing with computers and mobile devices, you're ready to move into advanced mode to create groups and personalize settings.

Let's start at the beginning and go through each scenario as mentioned above.

Connect two WIDI devices via auto-pairing
  1. Turn on both MIDI devices that have WIDI Master or other WIDI devices plugged in.
  2. The two WIDI devices will pair automatically.
  3. The blue LED changes from slowly blinking to constant light. When MIDI data is sent or received, such as a MIDI note or MIDI clock, the LED blinks dynamically.

When working with three (3) or more Bluetooth MIDI and/or WIDI devices, it is advisable to create fixed pairs or advanced groups.

This is to avoid random automatic connections and to control how your wireless connections are established. This procedure is explained at the end of this guide.

Auto-connect on iOS 16 (and above)

Apple has introduced auto-connect after first pairing with WIDI devices since iOS 16 (and above). If you only use your iOS device for updating, be sure to turn off Bluetooth after completing the process and/or remove WIDI devices from your general Bluetooth list.

This is to avoid problems or other confusion with your WIDI group configurations and automatic connection procedures between WIDI devices.

Connect WIDI Master with another Bluetooth MIDI controller via auto-pairing
  1. Turn on both the MIDI device with your WIDI Master plugged in and the other Bluetooth MIDI device.
  2. WIDI Master will automatically pair with the other Bluetooth MIDI device.
  3. The blue LED changes from slowly blinking to constant light. When MIDI data is sent or received, such as a MIDI note or MIDI clock, the LED blinks dynamically.
  4. If your WIDI Master does not automatically pair with another Bluetooth MIDI device, it may be caused by a compatibility issue. In that case, please check the open source compatibility list first. If not listed contact CME for technical support.

When working with three (3) or more Bluetooth MIDI and/or WIDI devices, it is advisable to create fixed pairs or advanced groups.

This is to avoid random automatic connections and to control how your wireless connections are established. This procedure is explained at the end of this guide.

Auto-connect on iOS 16 (and above)

Apple has introduced auto-connect after first pairing with WIDI devices since iOS 16 (and above). If you only use your iOS device for updating, be sure to turn off Bluetooth after completing the process and/or remove WIDI devices from your general Bluetooth list.

This is to avoid problems or other confusion with your WIDI group configurations and automatic connection procedures between WIDI devices.

Connect WIDI Master with macOS

Please note that pairing with macOS's built-in Bluetooth MIDI cannot be done via automatic pairing. This is in the design of the operating system. This means that every time you restart your computer or WIDI Master, you have to manually establish a new connection.

Apple has introduced auto-connect after first pairing with WIDI devices since macOS 13.5 (and above). This is a great feature because from now on, you won't have to connect manually every time. That said, it may cause confusion for those who want to reconfigure their setup without macOS or work with multiple WIDI devices.

To avoid this, you can disable Bluetooth on macOS or remove all (unwanted) WIDI devices from your general list of Bluetooth devices via the "Forget this Device" option in the Bluetooth menu of macOS.

The only way to get around this limitation is to add WIDI Uhost or WIDI Bud Pro to your operating system. This provides you with automatic pairing between two WIDI devices as described earlier.

If you want to connect to macOS via its integrated Bluetooth MIDI, follow the instructions below carefully.

  1. Turn on the power of the MIDI device with the WIDI Master plugged in and confirm that the blue LED flashes slowly.
  2. Click the [Apple icon] on the upper left corner of the screen, click the [System Preferences] menu, click the [Bluetooth icon], and click [Turn Bluetooth On], then exit the Bluetooth settings window.
  3. Click the [Go] menu at the top of the screen, click [Utilities], and click the [Audio MIDI Setup].
    Note: If you don't see the MIDI Studio window, click the [Window] menu at the top of the screen and click [Show MIDI Studio].
  4. Click the [Bluetooth icon] at the upper right of the MIDI studio window, locate WIDI Master that will appear in the device name list, and click [Connect]. 
  5. WIDI Master’s Bluetooth icon will appear in the MIDI studio window, indicating the successful establishment of the connection. 
  6. You can exit all setting windows now and open up your music software application and wirelessly transmit MIDI.

When using multiple WIDI devices to connect to your operating system's built-in Bluetooth, make sure each WIDI device is set to "force peripheral" via the "BLE Role" section of WIDI App.

This will avoid automatic pairing when multiple WIDI devices are used at the same time. If necessary, you can rename each WIDI device after the upgrade is completed. This way you will be able to distinguish each WIDI device when you use them at the same time.

Clear Bluetooth cache on macOS

If you are having problems or if the time to establish a wireless connection takes longer than 1 minute, you most likely need to clear the Bluetooth cache of macOS. In that case, follow the exact instructions as shown in this video.

Connect WIDI Master with iOS

Please note that pairing with iOS's built-in Bluetooth MIDI cannot be done via automatic pairing. This is in the design of the operating system.

Apple has introduced auto-connect after first pairing with WIDI devices since iOS 16 (and above). If you only use your iOS device for updating, be sure to turn off Bluetooth after completing the process and/or remove WIDI devices from your general Bluetooth list.

This is to avoid problems or other confusion with your WIDI group configurations and automatic connection procedures between WIDI devices.

The only way to get around this limitation is to add WIDI Uhost or WIDI Bud Pro to your operating system. This provides you with automatic pairing between two WIDI devices as described earlier.

If you want to connect to iOS via its integrated Bluetooth MIDI, follow the instructions below carefully.

  1. Go to the Apple AppStore to search and download the free application [midimittr].
    Note: If the app you are using already has a Bluetooth MIDI connection function, please directly connect to the WIDI Master on the MIDI setting page in your app.
  2. Turn on the power of the MIDI device with the WIDI Master plugged in and confirm that the blue LED flashes slowly.
  3. Click the [Settings] icon to open the settings page, click [Bluetooth] to enter the Bluetooth setting page, and slide the Bluetooth switch to turn on the Bluetooth functionality.
  4. Open the [midimittr] app, click the [Device] menu at the bottom right of the screen, locate WIDI Master that will appear in the list, click [Not Connected], and click [Pair] on the Bluetooth pairing request pop-up window.
  5. The status of WIDI Master in the list will be updated to [Connected], indicating that the connection has been successfully established. 
  6. Press the home button of your iOS device to minimize the [midimittr] app and keep it running in the background.
  7. Open the music app that can accept external MIDI input and select WIDI Master as the MIDI input device on the settings page, you can start using it.

When using multiple WIDI devices to connect to your operating system's built-in Bluetooth, make sure each WIDI device is set to "force peripheral" via the "BLE Role" section of WIDI App.

This will avoid automatic pairing when multiple WIDI devices are used at the same time. If necessary, you can rename each WIDI device after the upgrade is completed. This way you will be able to distinguish each WIDI device when you use them at the same time.

Clear Bluetooth cache on iOS

If you are having problems or if the time to establish a wireless connection takes longer than 1 minute, you most likely need to clear the Bluetooth cache of iOS. In that case, follow the exact instructions as shown in this video.

Connect WIDI Master with Windows 10/11

Please note that pairing with Windows 10/11's built-in Bluetooth MIDI cannot be done via automatic pairing. This is in the design of the operating system.

Microsoft has introduced auto-connect after first pairing with WIDI devices since Windows 10. This means that Windows can remember your WIDI device and will automatically connect to your WIDI device after the first pairing is established.

For the latest updates on connecting WIDI with Windows 11 read this section carefully.

Before you start pairing, make sure your music software is compatible with Microsoft's latest UWP API. This makes it possible to use the Bluetooth class compliant MIDI driver that comes standard with Windows 10/11.

Most software developers have not yet integrated this compatibility for various reasons. At the time of writing, only Bandlab's Cakewalk and Steinberg's latest Cubase and Nuendo have natively integrated this compatibility.

This means that when you use these specific software tools, you can pair WIDI Master or other standard Bluetooth MIDI devices without the need for drivers.

The alternative is to install a virtual MIDI port driver such as Korg's BLE MIDI driver.

If your WIDI Master is updated to the latest firmware version, the Korg BLE MIDI driver for Windows 10/11 is fully supported and even multiple WIDI devices can be connected simultaneously with two-way MIDI data transfer.

For older Windows operating systems and to bypass the limitations of Windows 10/11 onboard Bluetooth MIDI ecosystem, you can add WIDI Uhost or WIDI Bud Pro to your operating system. This provides you with automatic pairing between two WIDI devices as described earlier.

Follow this exact procedure to wirelessly pair your WIDI Master with Windows 10/11 via Korg's BLE MIDI driver:

  1. Please visit Korg's official website to download the BLE MIDI Windows driver.
  2. After unpacking the driver files with the decompression software, click the .exe file to install the driver Note: You can check whether the installation was successful in the sound, video, and game controller list of the device manager.
  3. Please use the WIDI App to upgrade the Bluetooth firmware of the WIDI device to v0.1.3.7 or later. At the same time, please set the upgraded WIDI to "Force Peripheral" in the "BLE role" section.
    NoteForce peripheral mode will avoid automatic pairing when multiple WIDI devices are used at the same time. If necessary, you can rename each WIDI device after the upgrade is completed. This way you will be able to distinguish each WIDI device when you use them at the same time.
  4. Make sure that Windows 10/11 and your computer's Bluetooth driver are updated to the latest version (the computer must be equipped with Bluetooth 4.0/5.0 functionality).
  5. Plug your WIDI Master into the MIDI device, turn on the power to start your WIDI. In Windows, click "Start" - "Settings" - "Devices", open the "Bluetooth and other devices" window, turn on the Bluetooth switch, and click "Add Bluetooth or other devices".
  6. After entering the "Add Device" window, click "Bluetooth", click the WIDI device name listed in the device list, and then click "Connect".
  7. If you see "Your device is ready to go", please click "Done" to close the window (after connecting, you can see your WIDI device in the Bluetooth list of the device manager).
  8. Please follow steps 5 to 7 to connect other WIDI devices to Windows 10/11
  9. Open the music software. In the MIDI settings window, you should be able to see the WIDI device name appearing in the list (Korg BLE MIDI driver will automatically detect the WIDI Bluetooth connection and associate it with the music software). 
  10. Now select the desired WIDI as the MIDI input and output device and you are good to go. If you do not open your music software after this process, the status of your WIDI changes from "connected" to "paired" in the general list of Bluetooth settings. The LED indicator stays on for about 2 seconds and then starts blinking slowly again.

Since this procedure can be quite challenging, see the video below for the full step-by-step explanation.

Clear Bluetooth cache on Windows 10/11

If you are having problems or if the time to establish a wireless connection takes longer than 1 minute, it is most likely you will need to clear the Bluetooth cache of your Windows operating system. In that case, follow the exact instructions as shown in this video.

Troubleshooting: WIDI and Korg BLE MIDI drivers on Windows 10/11

In some cases, Korg's BLE MIDI driver causes problems connecting to your WIDI device. If you can't solve your problem by clearing the Bluetooth connection cache mentioned above, there are a few things you can do.

First of all, make sure that both your Windows 10/11 and your computer's Bluetooth driver are upgraded to the latest version.

In addition, your PC, laptop or computer with WIndows 10/11 must be equipped with Bluetooth 4.0/5.0 functionality.

Also, Korg's BLE MIDI driver has a known bug with receiving long MIDI SysEx messages. If your installation needs to receive long MIDI SysEx messages, your best option is to bypass the built-in Bluetooth of your Windows operating system with WIDI Uhost or WIDI Bud Pro.

Besides this, it is known that when working with Korg's BLE MIDI driver, it must be in the first ten slots of your Windows non-system MIDI device list.

Otherwise, you will see your WIDI device in the Bluetooth list of Windows and you will be able to pair it, but you will not be able to access it from any software.

Follow these exact instructions to resolve this issue:

  1. Install Korg USB MIDI driver and utilities (Different from Korg BLE MIDI Driver)
  2. Run the Uninstall KORG USB MIDI program
    Note: It can be found in the Korg folder via the start menu (see image above)
  3. Click the "Next" button
  4. Click the "Option" button
  5. Deselect the "Delete KORG MIDI Device Only" checkbox and click "OK"
  6. Select the checkbox of MIDI devices before Korg BLE MIDI driver (usually you will see many duplicate USB Audio Device) to ensure that Korg BLE MIDI Driver is in the first 10 after deleting the drivers of these devices, including MIDI device "0"!
    Note: You may need to reinstall MIDI drivers for your devices after doing this.
  7. Click "Next"
  8. Click "Finish"
  9. Right-click Start >> Click "Apps and Features"
  10. Uninstall KORG BLE-MIDI Driver for Windows
  11. Reinstall KORG BLE-MIDI Driver for Windows
  12. Restart (may not be necessary, but just do it)
  13. Connect your WIDI device via Bluetooth

The above mentioned should fix the majority of the known issues. If you are still experiencing problems, please do not hesitate to reach out via support.

Connecting with Windows 11 (Update 2023)

Windows 11 has introduced two Bluetooth modes. When you want to add a WIDI device, you will need to switch to "advanced" mode first. To get started first Install the Korg BLE MIDI driver and power on the WIDI Device.

  1. In Windows 11 open [Settings] (Win+I)
  2. Click the [Bluetooth & devices] menu, and then click [View more devices] to enter the [Devices] setting page.
  3. Change the "Default" in the [Bluetooth devices discovery] settings to "Advanced".
  4. Back to the top of the page, click the [Add device] button to open the [Add Bluetooth device] window.
  5. Click the [Bluetooth] icon, select the WIDI product from the list of discovered Bluetooth devices, click the product name and confirm the connection.
  6. Exit the setting page. At this time, you can see that the pairing has been successful, but it is in the [Not connected] state.
  7. Open the music software, and select WIDI device as the MIDI input and output device on the MIDI setting page.
  8. At this point, if you go back to the general Bluetooth settings page, you will see that the status of the WIDI device has changed to [Connected].

Important: Windows 11 has a known problem with non-standard Bluetooth devices such as WIDI devices. Once you make the first connection, it will always automatically connect to your WIDI device.

This is perfect if this is what you want. If you want to use your WIDI device in a different setup, such as connecting to another WIDI device, you have to disconnect from the menu above, remove your WIDI device from the device list, and restart your computer completely.

Just deleting is not enough. A complete reboot is required.

Connect WIDI Master with Android

Please note that pairing with the built-in Bluetooth MIDI of Android devices cannot be done via automatic pairing. This is in the design of the mobile operating system. This means that every time you restart your mobile device or WIDI Master, you have to manually reconnect.

As with Windows, the Android music app you use must integrate the Android operating system's universal Bluetooth MIDI driver in order to communicate directly with your WIDI Master.

Most music apps have not integrated this functionality for various reasons. Therefore, you need to use an additional app designed to act as a bridge for connecting Bluetooth MIDI devices.

To bypass the limitations of Android's onboard Bluetooth, you can add WIDI Uhost or WIDI Bud Pro to your operating system. This provides you with automatic pairing between two WIDI devices as described earlier.

If you decide to work directly with your Android device's built-in Bluetooth, follow these exact instructions to set it up.

  1. Go to the PlayStore to search and download the free application [MIDI BLE Connect].
    Note: If your music app integrates Bluetooth MIDI, you can connect your WIDI device directly in this app. In this case, there is no need to download MIDI BLE Connect.
  2. Turn on the power of the MIDI device with the WIDI Master plugged in and confirm that the blue LED flashes slowly.
  3. Turn on the Bluetooth function of the Android device.
  4. Open the MIDI BLE Connect App, click [Bluetooth Scan], find the WIDI Master that appears in the list, and click [WIDI Master], it will show that the connection is created successfully.
  5. At the same time, the Android system will send a Bluetooth pairing request notification. Please click on the notification and accept the pairing request.
  6. After this you can press the home button on the Android device to minimize the MIDI BLE Connect App and keep it running in the background.
  7. Open the music app that accepts an external MIDI input and select WIDI Master as the MIDI input device on the settings page, then you can start using it.

When using multiple WIDI devices to connect to your operating system's built-in Bluetooth, make sure each WIDI device is set to "force peripheral" via the "BLE Role" section of WIDI App.

This will avoid automatic pairing when multiple WIDI devices are used at the same time. If necessary, you can rename each WIDI device after the upgrade is completed. This way you will be able to distinguish each WIDI device when you use them at the same time.

Please refer to the video below for visual support on setting up your wireless connection with an Android device.

Clear Bluetooth cache on Android

If you are having problems or if the time to establish a wireless connection takes longer than 1 minute, it is most likely you will need to clear the Bluetooth cache of your Android device. In that case, follow the exact instructions as shown in this video.

Step 6: Go into advanced mode with Bluetooth MIDI groups

With the latest firmware, your WIDI Master supports WIDI groups. Also called Bluetooth MIDI groups. Group connections enable two-way data transfer from 1-to-4 (MIDI Thru) and 4-to-1 (MIDI Merge). And it supports simultaneous use of multiple groups.

In addition, the group mode is often used to create fixed pairs. This is especially useful if you have multiple WIDI devices and want to make sure that the connection is fully established as you preset. This is to prevent arbitrary automatic linking between WIDI devices.

Keep in mind that this is a fairly advanced procedure. Before diving into the group setting, a basic understanding of WIDI devices and WIDI App is required. Harnessing its full potential starts with reading this blog and understanding the difference between central and peripheral.

It is strongly recommended to work with one or two WIDI devices first and only then dive into the group settings. Also, renaming your WIDI devices via WIDI App is an essential function to easily distinguish your WIDI devices from each other when working with more complex wireless setups.

In short, there are two ways to set up your group(s).

Before you start, make sure the following is set up correctly for each WIDI device that will be part of the group.

  1. Update each WIDI device to the latest firmware
  2. Delete existing group settings via WIDI App
  3. Set your WIDI device to "Force Peripheral" via WIDI App

Remember that "Force Peripheral" is intended to avoid pairing issues when working with multiple WIDI devices at the same time. If this has not been set up before, WIDI App will not be able to detect the WIDI devices you want to add to your group as they will be occupied already as a result of auto-pairing.

When working in group mode, always make sure that all group members are connected. If a device is missing from the group, the central device will continue to scan for it, negatively impacting your latency performance.

Auto-connect on iOS 16 (and above)

Apple has introduced auto-connect after first pairing with WIDI devices since iOS 16 (and above). This can cause confusion with your WIDI group configurations and automatic connection procedures between WIDI devices.

Please check the explanation of each group creation mode to overcome this.

WIDI groups via WIDI App for WIDI devices

Please note this simplified step by step guide and associated video. If you want to go into more detail, please visit this blog or check the manual of WIDI App.

  1. Open the WIDI App (Version 1.4.0 or higher)
  2. Upgrade WIDI Master to the latest Bluetooth firmware. Then keep only one WIDI Master powered on.
    Note: Please remember to avoid having multiple WIDI Masters powered on at the same time. Otherwise, they will automatically pair one to one. This will cause the WIDI App to fail in finding the WIDI Master you want to connect to as they are already occupied.
  3. Set your WIDI Master as “Force Peripheral” role and rename it.
    Note 1: After the BLE role is set as “Force Peripheral”, the setting will be automatically saved in the WIDI Master.
    Note 2: Click the WIDI Master device name to be renamed. The new name will be effective once restarted.
  4. Repeat the above steps to set all WIDI devices to be added to the group.
  5. After all WIDI Masters are set to the “Force Peripheral” role, they can be powered on at the same time.
  6. Click the "Group" menu, and then click "Create New Group".
  7. Enter the name of the group.
  8. Drag and drop the WIDI Master to the central and peripheral positions. Each group has always one central WIDI device. The number of peripherals can vary from 1 to 4.
  9. Click "Download Group". The setting will be saved in all WIDI Masters.
    Note: When using iOS to run WIDI App, turn Bluetooth off or delete all WIDI devices from your general Bluetooth device list. This is to avoid unwanted automatic connection between iOS and your WIDI devices instead of allowing your central WIDI device to automatically connect with your defined WIDI group.
  10. From now on, these WIDI Masters will restart and automatically connect as the same group by default.
    Note: The LED indicator of the central device will turn turquoise and the ones of the peripherals will remain blue.

This group setting allows you to communicate wirelessly between the central unit and its peripherals. You cannot send MIDI messages between peripherals.

Avoid auto-connect with iOS 16 (or above)

After setting up your group via WIDI App and downloading the group settings to your central device, you need to remove your WIDI devices from your general Bluetooth list and/or disable Bluetooth completely on your iOS device.

After this, you can turn on your WIDI devices and the group will automatically connect as you set it up.

Delete group settings

If you want to forget the group connection settings, please use the WIDI App to connect to the WIDI device with "Central" role and click "Remove Group Settings". Again, only power on this central device to allow the pairing with WIDI App. If you power on multiple group devices, they will automatically connect as a group. This will make it impossible for the WIDI App to make to connection as they will already be occupied.

Delete Bluetooth cache

Please note that if you experience issues after updating your WIDI devices or during the set up process with WIDI App, it might be you will need to clear the Bluetooth cache of your mobile device.

Especially when setting up a WIDI group for the first time, this can be a bit challenging. That is why it is called advanced mode. For your convenience a video guide is provided underneath.

Group auto-learn

Please note this simplified step by step guide and associated video. If you want to go into more detail, please visit this blog or check the manual of WIDI App.

Group auto-learn is an additional feature to set up your WIDI group in an automated process. Also, the group auto-learn mode allows you to add third-party Bluetooth MIDI devices to your WIDI group.

Therefore, this mode is also called Bluetooth MIDI groups.

Please note that all group data must be stored in the central WIDI device. This can only be a WIDI device. Bluetooth MIDI devices from other brands can only function as peripherals of the main WIDI device.

Please note that iOS, Windows 10 and Android are not eligible for Bluetooth MIDI groups. They can only be part of the group for as long as the session lasts. That is because their Bluetooth address changes after restart or even every 15 minutes and cannot be saved in the group settings.

This is in the design of those operating systems and can only be circumvented by adding WIDI Uhost or WIDI Bud Pro to those operating systems.

The only exception is macOS. Just click "Advertise" in MIDI Studio's Bluetooth configuration and it will be able to be scanned in the process.

For more detailed information on group auto-learn and working with iOS, macOS, Android or Windows in group mode, please refer to this blog for a better understanding.

To benefit from group auto-learn, please follow the exact instruction as shared below.

  1. Update each WIDI device to the latest firmware version.
  2. Set all WIDI devices to “Force Peripheral” to avoid auto-pairing between WIDI devices.
  3. Enable “Group Auto Learn” for the central WIDI device.
  4. Close WIDI app. Your WIDI Master LED indicator will flash blue slowly.
    Note: When using iOS to run WIDI App, turn Bluetooth off or delete all WIDI devices from your general Bluetooth device list. This is to avoid unwanted automatic connection between iOS and your Bluetooth MIDI devices instead of allowing your central WIDI device to scan for its peripherals during the group auto-learn process.
  5. Turn on up to four (4) BLE MIDI peripherals (including WIDI) for automatic pairing with the WIDI central device.
  6. When everything is connected, press the button on the WIDI central device to store the group in its memory. The LED indicator of your WIDI is green when pressed and turns turquoise when released.

This group setting allows you to communicate wirelessly between the central unit and its peripherals. You cannot send MIDI messages between peripherals.

Avoid auto-connect with iOS 16 (or above)

You will need to remove your WIDI peripherals from your general Bluetooth list to avoid auto-connection with iOS during the group creation or rebooting process.

Delete group settings

If you want to forget the group connection settings, please use the WIDI App to connect to the WIDI device with "central" role and click "Remove Group Settings".

Only power on this central device to allow the pairing with WIDI App. If you power on multiple group devices, they will automatically connect as a group. This will make it impossible for the WIDI App to make to connection as they will already be occupied.

For your convenience a video guide is provided underneath.


Tags

Bluetooth MIDI, customer care, start guide, WIDI, Wireless MIDI


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  1. HI, I bought your WIDI Master product and intend to work with Windows 11. The device is never shown/discovered in the Windows Bluetooth menu so I am unable to pair. What can I do? Thanks for any help.

    1. WIDI is fully compatible with Windows 10/11. I heard of this issue before in our Facebook Group. It was solved by changing the Bluetooth settings in windows “Bluetooth device discovery” – under device settings, near the bottom – from “default” to “advanced”. You can check out the post via https://www.facebook.com/groups/cmeprofans/permalink/3605490546347387/

      If this does not work for you, you can ask for support in this group or reach out to us directly via https://www.cme-pro.com/support/#tve-jump-183922d36ae

    1. WIDI App is only for personalisation of settings of your WIDI hardware, creating groups and updating firmware. It is not a standalone app that you can use without WIDI hardware. Hope this helps!

  2. I have 2 Instruments connected with widi master and Midi in/out. That's OK. But now I like to connect an Android Phone too, to use an Android MidiApp for one of the Instruments. All three should be connected. How is this possible ?

    With regards
    Stefan

    1. You will need to bypass the built-in Bluetooth of your Android device with a WIDI Uhost or WIDI Bud Pro. This will allow it to be part of a WIDI group as explained in chapter 6 of this blog. Hope this helps!

      1. Widi Master is rubbish.
        Does not work in windows 11 .
        Can't be seen when i add a device.
        What a waste of 90 dollars.

        Never buying CME crap again.

        1. Sorry to hear you have had this bad experience in conjunction with Windows 11. In our Facebook Group there are like-minded people who did get it to work. You are free to post a message there via http://www.facebook.com/groups/cmeprofans

          One recommendation specifically for Windows 11 and its built-in Bluetooth is to ensure Windows 11 is set to “advanced mode”. This is not its default mode, so it could explain why you cannot locate features for BLE MIDI within your software.

          This section explains it in more detail: https://www.cme-pro.com/widi-master-start-guide-bluetooth-midi/#tve-jump-1893ea77864

          Also, with all built-in Bluetooth of any operating system, make sure you are working with the latest possible drivers for your Bluetooth chipset. Also, make sure to clear the Bluetooth connection cache of your Windows PC: https://www.cme-pro.com/widi-master-start-guide-bluetooth-midi/#tve-jump-1834abec4da

          From CME, we have two workarounds for incompatibility with Windows. One is via Korg’s BLE MIDI driver and is free of charge software-based: https://www.cme-pro.com/widi-master-start-guide-bluetooth-midi/#tve-jump-1834ac15cc6

          One is hardware-based and can be implemented through bypassing the built-in Bluetooth of your Windows PC with WIDI Uhost or WIDI Bud Pro. This way you create a rock solid WIDI to WIDI connection and avoid the hassle of Windows 11.

          Again, sorry to hear about your bad experience. I do hope the above can already help you out. Feel welcome to reach out via the Facebook Group, you will be surprised how many kind people are willing to share their positive experience with you.

  3. Hi,

    I have a WIDI Master Pro that I've just started using in my live band. It mostly works, but I do run into very large and random latency at times that I think is caused by RF interference. This doesn't happen in my home studio, but don't have nearly as many wireless devices there. In my rig, I have 2 UHF wireless mics, a 5.8ghz guitar wireless, an M1 Macbook Air, and a UHF wireless IEM system.

    Nothing else I have is on the 2.4ghz range that the WIDI Master runs in; however, my other bandmates have 2.4ghz IEM and instrument wireless systems on stage, usually about 5 meters from me. Further than my wireless receivers, but still fairly close.

    I'm looking for ways to avoid this RF interference to eliminate the random latency I'm running into. At times, it can be impossible for me to maintain simple steady 8th notes on stage, an issue I never run into with my hardware synths. Note that this is on a simple piano patch. Sometimes it works fine, sometimes not, so I don't believe that it's my computer hardware causing the latency. I never have it happen in my home studio, which is why I think it's RF interference. Hopefully there's a way to improve this problem I'm having.

    Best Regards.

    -David

    1. Thanks for reaching out and sorry to hear this. I see you have many wireless signals on stage, this can certainly cause issues. For optimal performance I recommend to update your WIDI device to the latest firmware and run a factory reset afterwards via WIDI App.

      If you connect your WIDI device to the built-in Bluetooth of a 3rd party device, like your computer, this connection is as strong as your weakest link. being the onboard Bluetooth of your operating system.

      In that case, it is recommended to use a WIDI to WIDI connection instead and bypass the onboard Bluetooth. Next you can create a fixed pair via the group feature of WIDI App.

      Also, make sure to connect your WIDI devices at the latest point in time. They can negotiate the best available frequency. Unlike Wi-FI devices. If you connect your WIDI devices at the end, they will find the best available frequency, and it might solve your RF issue.

      Feel welcome to reach out via https://www.cme-pro.com/support/#tve-jump-183922d36ae so we can assist you on a more personal level and dive into your setup together.

      Hope this helps!

  4. Can the Alesis Vortex Wireless 2 Master Keyboard and Roland Sound Canvas sc-88 be connected?

    Does sc-88 support output power? If not, do I need to purchase a WIDI Jack?

    1. Thanks for reaching out. I am sorry, but I do not know the technical details of all MIDI devices across the globe 😉 If your device is listed, you can retrieve information from this community list: https://docs.google.com/spreadsheets/d/1L6D2lUkcX0NEHpzp0vw5aAtAIsHANeUOCCH_fXtwyKI/edit?usp=sharing

      If you are not sure if your device is able to provide power, your solution is WIDI Jack + 5-pin DIN cables. You can also try to opt-in on the shared knowledge of our community: http://www.facebook.com/groups/cmeprofans

      Hope this helps!

  5. Can multiple devices (e.g. phones) connect to the one WIDI Master at the same time?

    I'd like to connect 5 phones to one MIDI device.

    1. You can only do that if you bypass the built-in Bluetooth of your mobile with WIDI Bud Pro or WIDI Uhost. Then you can create 4-to-1. Hope this helps!

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