Unable to flash: "Selected file is not a proper BIOS!"

Question

Unable to flash: "Selected file is not a proper BIOS!"

Opened this issue 6 months ago · 9 comments

System

Motherboard: Asus ROG STRIX B550-F GAMING (WI-FI)
BIOS Version: 3404 (2023/10/31)
GPU: EVGA XC HYBRID GAMING GeForce RTX 2080 Ti 11 GB Video Card
CSM is turned off. Make sure to confirm this in the BIOS and not with GPU-Z or similar since it can be inaccurate
4G decoding is enabled. Make sure to confirm this in the BIOS and not with GPU-Z or similar since it can be inaccurate
~~UEFIPatch is applied (see Using UEFIPatch for more information). On some motherboards DSDT Patching is also needed~~ not needed on AM4
I have read Common issues (and fixes)

Description
header search for PciBus returns 2 results:

i added NvStrapsReBar.ffs to the end of both volumes and saved the image file. when i tried flashing the saved image file, i got an error from EZ Flash 3 which said "Selected file is not a proper BIOS!". i also tried BIOS FlashBack but that resulted in a solid green light and nothing changing.

Answer 1 · 2024-03-14T23:52:05.000Z

Have u "patched" the saved mod.image with the UEFI_Patcher tool?
If you've already done this, than u probably have to flash the modded BIOS file with a modded flashing tool, wich ignores mismatching bios files.

Answer 2 · 2024-03-15T00:51:33.000Z

I encountered this exact issue so I flash it using AFUDOS. not sure if it will work on your board since I did it on TUF B450M PRO GAMING.

Answer 3 · 2024-03-15T05:15:27.000Z

Have u "patched" the saved mod.image with the UEFI_Patcher tool? If you've already done this, than u probably have to flash the modded BIOS file with a modded flashing tool, wich ignores mismatching bios files.

there's nothing to patch.

I encountered this exact issue so I flash it using AFUDOS. not sure if it will work on your board since I did it on TUF B450M PRO GAMING.

i can't find any binaries for AFUDOS anywhere nor any instructions.

Answer 4 · 2024-03-15T05:53:06.000Z

I encountered this exact issue so I flash it using AFUDOS. not sure if it will work on your board since I did it on TUF B450M PRO GAMING.

i can't find any binaries for AFUDOS anywhere nor any instructions.

There is a youtube resource that includes the source file and also the instruction on how to AFUDOS.

Answer 5 · 2024-03-16T01:19:48.000Z

I encountered this exact issue so I flash it using AFUDOS. not sure if it will work on your board since I did it on TUF B450M PRO GAMING.

i can't find any binaries for AFUDOS anywhere nor any instructions.

There is a youtube resource that includes the source file and also the instruction on how to AFUDOS.

i followed that but it doesn't work, AFUDOS does not open.

Answer 6 · 2024-03-16T02:14:34.000Z

Try this:
#61

Answer 7 · 2024-03-19T22:36:49.000Z

Asus bios images have ways of detecting whether it's modded or not. I had the same problem with my board. The easiest solution is to buy a CH341A Programmer. This will force a bios on to the chip with no interruptions. In my case, I used a raspberry pi I had lying around and it worked for me using flashrom.

Answer 8 · 2024-04-30T21:56:16.000Z

@MrAnonymous7122 Is there a manual for doing that?

Answer 9 · 2024-05-01T06:43:26.000Z

You can look up ch341a tutorial for your specific model. However I didn't consider that afudos or ubu may also work so you could try those before you buy a ch341a.