Hello,
How do I reset a forgotten bios password?
Do I need to remove the battery and 24V power for at least 24h? Are there any jumpers I need to mess with or some utility to run?
I can’t upgrade the BIOS (to reset the BIOS password) because its not booting in EFI mode and I can’t change to EFI because of forgotten password - haha.
Not sure what else to do.
I appreciate any help.
Thank you
Please have a look here.
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Hi Martin,
Thank you for your quick replay.
I am not sure if I can do BIOS update since the APC boots in legacy mode instead of EFI mode and all the BIOS upgrades are EFI executable (am I wrong?).
There is no way to change to boot in EFI since I don’t know the BIOS password and I can’t get to BIOS (F2, DEL will ask for password).
If there are no legacy updates available then it looks like you have to send it for repair.
Please check with your local B&R contacts.
So it turned out that the password protected BIOS was booting in UEFI but not launching the built-in UEFI shell.
I was following the instructions from the readme.txt from the BIOS zip file but again the F11 was not showing the option to boot in EFI shell mode and the file startup.nsh was not called.
So what I did is I download the open-source EFI shell file shellx64.efi from edk2/ShellBinPkg/UefiShell/X64 at UDK2018 · tianocore/edk2 · GitHub and create \EFI\BOOT\ dir on the CFast card and copy the file shellx64.efi there and rename it to BOOTX64.EFI.
After reboot the startup.nsh was called and the BIOS upgrade was executed and the password got removed.
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Great that you could solve it 
In this case it seems the APC was booting in efi mode but the efi shell was excluded from the boot order, right?