tried the EEPROM shorting method, but I either cannot pull it off with two hands (I already need two to just short the EEPROM, even if it’s kind of easy to reach), or don’t know when to exactly short the EEPROM to bypass the screen.
I bought a replacement board for mine, but it’s BIOS locked, and I need to defeat it to disable secure boot to make it usable (won’t even boot with PXE without erroring out).
Call the person you bought it from and get the password?
He dismantled it from a batch he got from an unknown place, so I will either have to ask for additional two hands and also get the info on when to short the EEPROM, or get some of those clip-on programmers and use my Pi to reflash it (allegedly, you can sometimes even find the code in the EEPROM in plain text if it’s old enough).

