Need help for HP ProBook 445R G6 Secure boot key removal from BIOS dump

[ktcar214]

Hello.
I tried to add a custom secure boot key (for secure booting Linux) to my bios, but after this, my laptop bricked. After adding secure boot key (via PowerShell) and enabling secure boot my laptop turns on, shows HP logo, and after 5 seconds it turns off and on, and it repeats forever.

My goal is to either turn off secure boot or remove my custom key from BIOS dump.

I'll attach my bios dump (version R79_011700) from my bios chip 25b127dsig, my keys (PK/KEK/db), and bios dump from another HP ProBook 445R G6(I found it on this forum. URL: https://www.badcaps.net/forum/showthread.php?t=100772 )

Thanks in advance and let me know if you need anything!

Some information of my laptop:
Model: HP ProBook 445R G6 (Ryzen 5 3500U)
P/N 7QG54PA#AB1
Windows: No

[ktcar214]

Re: Need help for HP ProBook 445R G6 Secure boot key removal from BIOS dump

I can't check certificate information now, but you can find custom key in my bios dump by searching one of these keywords:
"ktcar214", "Kim Taehwan", and "Gunpo-si"
All keys are marked as KEK, PK, and db.

[lapfix]

Re: Need help for HP ProBook 445R G6 Secure boot key removal from BIOS dump

try