For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
00165 boards much more picky with BIOS. Did you even try to perform a clean install of High Sierra when you had a working (bootable) BIOS?? Installing High Sierra will correct ME region automatically, as long as unit will boot to installer.
I used original working board bios chip and boot from high siera and it works for couple of hour but now again this is not boot up , shows stop sign. This is terrible and i am surprised.
So you get stop sign, not restart, or stuck on logo?
Then disconnect all devices, keep only LCD and SSD.
Use external mouse/keyboard for test.
Test it with your USB OSX too.