Hello everyone,
I have a K1 Max 2024 with CR4CU220812S12 board without CFS.
Stuck on green firmware 1.3.5.19 (installed via OTA). Need to revert to stable blue (V1.3.3.46). Standard rollback is blocked.
The /usr/bin/ota_file on my current firmware cannot unpack S12 firmware archives. I need /usr/bin/ota_file from a working motherboard S12 printer running V1.1.0.27.
The printer is partially alive: SSH and Fluidd work, but the screen is distorted and the MCU error prevents printing.
If you can help then, to extract the file you need SSH access to your printer. Then run this command (replace with your printer’s IP):
scp root@<printer-ip>:/usr/bin/ota_file ./ota_file_s12
Share the file here or via DM.
Thanks for any help.