This page describes how to perform a firmware update for our TRS-Bridge module.

Most recent firmware

TRS-Bridge firmware version 1.00:
Initial release

How to Update

Firmware updates can be done via Midi Sysex by using a 3rd party tool (MidiOX on Windows, Sysex Librarian on OSX).

Bootloader mode

To access the TRS-Bridge bootloader, press and hold the OUT4 button while powering on the module. All LEDs will light up in purple to indicate bootloader mode.

Update Using MidiOX

Enter the Bootloader mode as described above.
Connect INPUT1 from your TRS-Bridge to the output of your computer.
Open MidiOX and select the correct midi output via Options -> MIDI Devices
Go to View -> SysEx
enter the configuration Sysex -> Configure. Activate “Delay after F7” and set it to 30.
Open and send the firmware update file File->Send SysEx File. Use the file with .syx extension.
Wait until the update is finished.
You can see the progress on the module’s LEDs. The update takes about a minute
If you get a CRC error, try a larger value for “Delay after F7” or a different midi interface
When the update is complete the new firmware will start.

The firmware update progress is shown with a blued light scrolling from top to bottom. A CRC error is shown by the IN1 led lighting up in RED. After a successful update, all LEDs lights up in GREEN for a few seconds, then the new firmware starts.

Update Using Sysex Librarian

Enter the Bootloader mode as described above
Connect INPUT1 from your TRS-Bridge to the output of your computer.
Download Syex Librarian from and install it.
Open the firmware syses file with .syx extension
Go to Sysex librarian – Preferences and set “Pause between played messages” to 30
Select the correct midi interface
Press play
Wait until the update is finished.
You can see the progress on the module’s LEDs. The update takes about a minute
If you get a CRC error, try a larger value for “Pause between played messages” or a different midi interface
When the update is complete, the new firmware will start.