I also have the Z170P
I'd previously loaded unlocked Bclck with Provided unofficial BIOS for Z170 motherboards , as you can see here , there are many unofficial BIOS for unlocking the Bclck, on Z170 motherboards . :
I previously had a 6500 running at 4.5Ghz on a GA 170 ( Gigabyte ) board . This was around a year ago .
Today I flashed an ASUS Z-170 P , I flashed using a FreeDOs USB with the 'AFUDOS.exe' program ( See video Youtube vid) . The board was previously running a 2018 BIOS ( 3805 ) with ME Firmware 11.8.50.3470. I downloaded the custom firmware from this thread ( Asus Z170-P 8008.cap) . THe flash ran, it verified 100% , I restarted the machine , once , twice and realised I was stuck in the 'ASUS EZ flash' menu , It asked for the 8008.CAP, which I used to flash again . Ever since , I have been stuck on an 'EZ Flash ' menu , that fails to run with any USB drive connected . As shown in attached picture
Luckily this Motherboard has a socketed type of EEPROM BIOS chip, and I can get a preflashed version for this board , though I might just bin this motherboard if it cant run unclocked Bclck BIOS . SO I am curious why this did not work out ? Is the BIOS and ME Firmware Related ? Does the ME Firmware prevent older or modded BIOS versions from working at all ?