Get the files in this Google drive folder.

Mykeyclub Firmware Files - Google Drive

MKC75 Software Files for Tri-mode Hotswap PCB only.zip

JRIS80_Tri_mode_PCB_20240105_V10.01.zip

MKC65 Tri-mode_20240116_V10.01.zip

1. Turn off the switch of the Tri-mode PCB.

1. Plug in the keyboard in wired mode.
2. Open the upgrade program.

1. Wait for the upgrade to finish. Once Pass shows up you can close the software and the process is done.