Mini pc Beelink u55 bios bricked

[Milovanovic1992]

Hi. I got an Beelink u55, which won't boot. Just white and blue light for 5 seconds, and then it shuts down. I noticed that something drains Bios battery. I have put new one, but after short time voltage drops from 3+ to 2volts. I didn't find any obvious short on board. Not ssd and ram issue. Does somebody have bios dump for this model? I would try that solution too. Serial number is 5005U1EF10180.
Bios chip is GigaDevice 24q64CWIG. I can't even find exe bios update online. I desoldered bios chip, and after that bios battery not draining anymore. So i suppose it's firmware problem, or the bios chip itself.
I will upload mine dump file, if somebody can fix it maybe.