[TOOL] UEFI Editor

BIOS/UEFI Modding BIOS Modding Guides and Problems
124

Hi.
Thanks for providing amazing tool.

I have problem with editing bios.

Motherboard: B550M Pro SE
Bios Download Link: ASRock > B550M Pro SE

image
image1416×853 18.4 KB

I got the error while opening the bios file(downloaded from official site) with UEFITool.

  • FfsParser::parseRawArea: one of objects inside overlaps the end of data

  • FfsParser::performSecondPass: the last VTF appears inside compressed item, the image may be damaged

And the Bios file structure is different.

Is it okay using the extracted bios with above errors?
if then, please someone teach me how to edit bios…

125

@DenisLi

This thread IS NOT about the UEFITool, that is an auxiliar outside tool and project from spare time of a developer/firmware security engineer.
Structure of AMD platforms are a bit messy/unpredictable results/analysis with it.

This thread is about UEFI-editor

126

Sorry.

127

Hello

This is the basic question, but trying to learn how to modify the bios. Please teach me kindly.

image
image1238×367 8.83 KB

Above image is showing the language selection on the BIOS. As a first thing, I want to try hide the language selection button.

Motherboard: ASRock b550m pro se
Bios version: 3.41

To hide the language selection panel, I tried uncheck the suppress_if. with this modified bios, I can enter bios setting, but black screen, and with moving mouse, the black screen removed following the mouse path(like erase tool on the paint). And I can see the ASRock background only, no any text.

Here is my extracted files.

Please teach me what should I do to hide the language selection panel.

Thanks
extracted.zip (615.7 KB)

128

Uploading: 11111.png…
Hello, thank you very much for the tool. I used an MSI x99a Gaming 7 motherboard and an E51660V3, and I tried following the tutorial to remove the red circles in the CSM Compilation and flash it into the motherboard. But when I press del to enter the bios settings, the screen just goes black and nothing happens. What could be the cause?

129

Hello,

I’m reaching out with a technical question regarding a BIOS protection issue I’ve encountered:

My BIOS appears to be protected. When I open the BIOS binary file with UEFITool NE, I see the message “AMI v2 protected ranges hash file found at base …” under Security. Additionally, when I attempt to change settings without flashing a modded BIOS (using tools like RU.EFI or setup_var_cv), I run into errors. For instance, trying to modify the overclocking lock flag in CPUSetup returns the error: “Write variable failed: 0x00000008.”

Given this, I’d like to know if it’s feasible to use the UEFI Editor to modify the BIOS firmware to reveal hidden BIOS menus and then flash it back. Would the BIOS protection still apply, possibly preventing successful hash verification and causing boot issues?

Any advice or insights you could share would be greatly appreciated. Thank you for your time and help!