It is impossible to start print on K1C after FW update to 1.3.5.22

I have recently updated firmware on my K1C to version 1.3.5.22. All my previous settings were obviously erased, which is a huge problem for me. I have managed to make 3 prints. After that I can’t upload any file to my printer in any way, that I know

I’m using “Creality Print” software (yeah, I know, big mistake). I tried “Send G-code” option, “One-click print”, “Multi-machine”. None of it works. What is worse, even direct printing from USB didn’t bring any results, since printer can’t see G-code files on the drive. The camera-issue discussed in other threads is also present, but it is the least of my current issues.

How can I restore functioning of my printer in the fastest way possible?

P.S. I’m shocked with Creality’s QC-team work… if there is one at all

Downgrade to previous firmware-version (if possible).