Through Amisce, I modified the undervolt protection switch and further enabled the hidden menu options. Unfortunately, the motherboard itself doesn’t have strong performance, and all overclocking attempts hit limits such as current limit, power limit, and temperature limit, leading to throttling. So, I gave up. Thank you to my past self for the effort.
Hello everyone, I hope to get your help.
Previously, I mentioned in the thread below how I tried to modify my BIOS:
* Request-unlocked-bios-for-lenovo-legion-t7-34imz5
Recently, I made some progress. I purchased a CH341A programmer and successfully read, modified, and re-flashed the BIOS chip.
On a side note, this tool is very convenient and does not require removing the chip.
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Back to my progress: I used UEFI-Editor to modify the BIOS to reveal some hidden advanced menus:
However, after rewriting the chip, my computer failed to boot. Specifically, the symptoms are: the fans spin but their LEDs do not light up, the GPU LED is on, and the motherboard’s four diagnostic LEDs show activity in the following sequence—CPU, Memory—but it stops at GFX. There is no further response even after a long time, except for occasional automatic restarts, repeating the same behavior.
When I restored the backup of the unmodified BIOS, the computer booted normally.
My motherboard has two Winbond 128M chips, storing the ME region and BIOS region, respectively. Below is the BIOS I extracted.
* [Bios Files]
Could someone help me modify it? My requirements are:
1. Disable undervolt protection.
2. Reveal the “Advanced Menu” within the advanced settings.
3. Disable BIOS lock, CFG lock, and related features.