Comments (1)
danausx
commented on September 10, 2024
These are the instructions to downgrade or dump Bios from an EFI shell if you ever need to
Use at your own risk!!! I only tested this downgrading from 3.02 to 2.0.1 on a Razer Blade Stealth Late 2017 RZ09-02393 and RZ09-02394.
Required items:
-
OpenCore with OpenShell.efi tool enabled in config, auxiliary, timeout and picker enabled.
-
AfuEfix64.efi inside your EFI partition
-
Dumped file of the complete 2.0.1 Bios (Boot block and main Bios). Move this to the same folder as AfuEfix64.efi
To dump your curent Bios you can use:
AfuEfix64 bios.rom /o
Instructions
Boot to OpenShell.efi from OpenCore menu, find your EFI partition number location and type:
fsX: (example fs0:)
dir (check if files match)
You can try different numbers or reference the list of devices of OpenShell startup.
Move to the folder where AfuEfix64.efi is and execute:
AfuEfix64 bios2-0-1.rom /P /B /L0
This should restore the bios and boot sectors and load CMOS defaults.
Reboot and you're done.
from razer_blade_stealth_hackintosh.
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