K1c with Board CR4CU220812S12 !!!

I recently bought a K1c Printer from an AliExpress seller.
The device worked fine until I tried updating the firmware. My current firmware version is 1.3.2.31, which is missing some features, and the printer doesn’t recognize any updates.
I found out online that this problem is common with the CR4CU220812S12 board.
However, the official site appears to only support the CR4CU220812S11 board.
After opening the printer, I confirmed it is indeed a CR4CU220812S12, which is quite peculiar.

Has anyone else experienced this issue and can offer help?