This page describes how to perform a firmware update for our MC-2oh2 cpu upgrade.
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 2oh2 bootloader, power down the synth. Now press and hold START + STOP while powering on the synth. The display will show the bootloader.
Update Using MidiOX
- Enter the Bootloader mode as described above.
- Connect the midi input from your MC-2oh2 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 display. The update takes a couple of minutes
- 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.
Update Using Sysex Librarian
- Enter the Bootloader mode on TM62100 as described above.
- Connect the midi input from your SK-synthesizer 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 display. The update takes a couple of minutes
- 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.