I used CoffeeTime 0.99 to mod the BIOS.
Orginal Bios: 16 MB file on MEGA
Mod Bios: File on MEGA
I bought it a long time ago so I don’t have the seller’s information anymore.
@JUMP The modified BIOS looks correct:
908EA microcode present
ME Corporate Firmware 11.7.0.3307 and set to disabled.
PCIe patched for BGA1440
There is a knowledgeable member of this forum who may be able to help you if the problem is the BIOS mod, so I will tag @dsanke to ask if they could please check that the BIOS mod is ok.
How did you flash the modified BIOS? desolder BIOS chip, SOP-8 clip or SPI header?
There have been reports of problems using the CH341A with some ASRock boards such as this thread:
[CH341a Problem] Which bios_ph1 Cable for ASRock Z270 Pro4?
And also QNCT CPU sellers on Aliexpress:
If your motherboard is ASRock, please do not use CH341A programmer. The programmer has unknown bugs.
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@JUMP As the motherboard booted with the i3-9100f the CH341A may have flashed ok - did you verify the BIOS chip after flashing?
Hopefully dsanke will take a look when he has a moment.
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