Hello.
On new BIOS Asus disable undervolting on my laptop (N580GD with i5-8300H). And it become hotter, slower and louder as usual.
Official is no way to back to previos working BIOS (3.22). EZ Flash (build into asus firmware) refuse to flash older than 3.23 ROM - also via winflash with /nodata parameter.
Is any way to revert back to previous bios without unsoldering chip and program it ?
I read guide on reddit about search overclocking variable and i found it in bios image (same version as installed on my laptop):
0x2FC2D One Of: Overclocking Lock, VarStoreInfo (VarOffset/VarName): 0x78C, VarStore: 0x1, QuestionId: 0x1BE, Size: 1, Min: 0x0, Max 0x1, Step: 0x0 {05 91 B6 03 B7 03 BE 01 01 00 8C 07 10 10 00 01 00}
0x2FC3E One Of Option: Disabled, Value (8 bit): 0x0 {09 07 04 00 00 00 00}
0x2FC45 One Of Option: Enabled, Value (8 bit): 0x1 (default) {09 07 03 00 30 00 01}
I thing it address is 0x78C
Problem is that i dont have CpuSetup menu in RU to change it. Is any other way to change it without flash BIOS ?
Regards Lukas
Hi Lukas,
I have the exact same model laptop (only with i7-8750H) with the exact same problem, not being able to undervolt since a BIOS update.
Did you find a solution to this problem?
Looking at your name, are you maybe Dutch, like me?
Your response and help would be really appreciated!
regards,
Alain
i have the same laptop, it seems that there aren’t ways to unlock the bios if not flashing with an external programmer… i did it with the ch341 programmer, and i haven’t added any strings to the bios but i edited it with AmiBCP to put my settings directly in to the bios, not only for the undervolt but either for the memory timings.
PS. sorry for my bad eng
There is a way, I’ve been running this for years now.
Add the modGRUBShell.efi to /EFI/BOOT/ and add the bootoption from the BIOS.
Values are for N580GD FW324 only, re-check values on new BIOS versions.
Values are for N580GD FW324 only, re-check values on new BIOS versions.
CFG Lock off: Run the Modified GRUB Shell > Type command: ‘setup_var 0x6F0 0x00’
BIOS Lock off: Run the Modified GRUB Shell > Type command: ‘setup_var 0xB4B 0x00’
Overclock Lock off: Run the Modified GRUB Shell > Type command: ‘setup_var 0x78C 0x00’