Guide to re-enable Undervolting after latest BIOS updates that included PlunderVolt mitigations : Lenovo () Restart, disable secure boot, and boot through the USBĬhange the value you found in output.txt then press ctrl + w Put the RU.efi file inside BOOT then rename it to boot圆4.efi Make a folder called BOOT inside that folder Make a folder called EFI in root folder of USB You will now find overclocking to re-enabled.ĭownload this bios tool RU.EXE + RU.EFI ()įormat a USB drive to FAT32 on GUID partition map Once this has loaded, enter setup_var_3 (VarOffset) 0x00to disable overclocking lock for example in my case setup_var_3 0xDF 0x00Įnter rebootto exit and restart your computer GitHub) to open the bios file inside extracted folder (System bios with bios guard ver x.x.Make a folder called EFI in the root of the USBĭownload this file and place it inside BOOTīoot into the USB drive (spam F12 at the BIOS prompt and select your USB drive) mingw32-make -s -f Makefile.release copy /b /y releaseUEFITool.exe cd UEFITool.exe > nul echo.
Open the output.txt file then using ctrl+f search for overclocking lock, you will get a result similar to this:įormat a USB drive to FAT32 on a GUID partition map. (path to ifrextract.exe) (input file path to extracted PE2 image) (output path to textfile)Ĭ:\users\test\downloads\ifrextract.exe C:\users\test\downloads\Section_PE32_image_B6A7A5CE-5881-4C49-50BE-69C95681685D_Setup.sct C:\users\test\desktop\output.txt GitHub ) then open a command prompt, put the following syntax in it ->.GitHub) to open the bios file inside extracted folder (System bios with bios guard ver x.x.x) then press ctrl+f search for overclocking lock in text section, then double click on results at the bottom, right click on PE2 image then extract as is.ĭownload Universal IFR Extractor for Windows ( Release 0.3.6.
#Uefitool and irf for mac extractor github .exe
exe file and extract the packaged files inside a folder.Įxtract the actual bios files from the extracted files using this python script BIOSUtilities/Dell_PFS_Extract.py at master I am not responsible for you bricking your device or voiding your warranty please use responsibly.ĭownload your bios file from Dell support website, then use 7Zip ( 7-Zip) to look inside the packaged.
This simple guide is made for advanced users only,
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