[Request] Lenovo Legion Y540-17IRH Bios Unlocked

BIOS/UEFI Modding BIOS Modding Requests
41

Ok friend,
you can use the Tutorial for others laptop like this :

[Request] Gigabyte Aero 15 OLED BIOS unlocked (21)

[Request] Gigabyte Aero 15 OLED BIOS unlocked (24)

Only you have to find differents variables into the same Module GUID: 4570B7F1-ADE8-4943-8DC3-406472842384 PchSetup

0xB5E06 Setting: Flash Protection Range Registers (FPRR), Variable: 0x6D1 {05 91 75 0D 76 0D 08 05 05 00 D1 06 10 10 00 01 00}
0xB5E17 Option: Disabled, Value: 0x0 {09 07 04 00 00 00 00}
0xB5E1E Option: Enabled, Value: 0x1 {09 07 03 00 30 00 01}


0xC27A8 Variable 0x7C equals value in list (0x1) {14 08 7C 00 01 00 01 00}
0xC27B0 Setting: BIOS Lock, Variable: 0x17 {05 91 D2 06 D3 06 13 0A 05 00 17 00 10 10 00 01 00}
0xC27C1 Option: Disabled, Value: 0x0 {09 07 04 00 00 00 00}
0xC27C8 Option: Enabled, Value: 0x1 {09 07 03 00 30 00 01}
0xC27CF End of Options {29 02}

Variables NVRAM change values from 0x01 to 0x00 to unlock :

FPRR : 0x6D1
BIOS Lock : 0x17

Use H2OUVE or RU shell :

https://nstarke.github.io/0037-modifying…ing-ru-efi.html

https://www.instructables.com/Lenovo-Y70…Me-Gen3-Speeds/

https://casualhacking.io/blog/2019/6/2/d…-s-hardware-cpu

https://ruexe.blogspot.com/

https://www.mediafire.com/file/51rqk94x9…H2OUVE.rar/file

H2OUVE command to make a dump vars.txt , execute it from a command window as Admin :

H2OUVE.exe -gv vars.txt

Let me know
Regards

P.S. same like the time before with “LvlSmasher” , look aboove …

42

Hi, I’m really excited about unlocking advanced settings on my BIOS but before bricking my device do you think it should work on Y540-15irh 81SX0005US? It has a 2060 too

43

In general, the patch was found.
When I started dealing with BIOS volatile data problems and packages of text strings. I wondered why some forms do not receive information about, for example, XMP profiles. And I made a small discovery for myself: BIOS menus initialization function was split.

44

Hi, I have a lenovo y540 17 irh pg0 (specifically) and I don’t have, as you know, access to the bios

Excuse the ignorance, but I do not understand anything that is explained here, since I do not have advanced knowledge of this subject, could you explain to me how to unlock the advanced settings, as if I were a 3-year-old child? Thank you and I hope you are still alive xd