Roll back HP Bios to stable version

Jul 22, 2018
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Product Name: HP Pavilion 15-aw008ca
Operating System: Microsoft Windows 10 (64-bit)
Model: 15-aw008ca
Product #: W7B77UA#ABL
System Board: 81FD 81.21

I'm trying to revert back to an older bios but it seems that HP locks their BIOS's so you can't do that...

It was originally running American Megatrends Inc. F.09 bios, (which I can't find anywhere now) which I updated to attempt to solve some issues with power and sleep settings not functioning properly. I used the HP Notebook System BIOS Update (AMD Processors)F.29 Rev.A

https://support.hp.com/ca-en/drivers/selfservice/hp-pavilion-15-aw000-notebook-pc-series/10862162


Unfortunately, now everything is running unbelievably slowly taking 10-15 times longer than before, and anything borderline intensive just stops responding, and the audio is crackling, and cutting out. It's useless beyond being a very basic text editor now.

Tried and failed to update bios through the UEFI options but it throws the error "unable to open signature file." I redownloaded the file, tried it again, same error, tried a different flash drive and same error.

Also tried the bios recovery by holding windows key +b while and hitting power, and after about 30 seconds a window informed me the bios update failed, and it booted back into windows.

I Just tried it through freedos using the steps found in this article: https://www.bios-mods.com/forum/Thread-H...e-AMI-Bios
but I'm also getting an error related the .sig file. I keep seeing that the driver should be a .rom file but I have a .bin is that ok? It's the bios from the HP site (which I'm not 100% is the right one because my exact laptop doesn't produce any results on their site.)

Any help would be extremely appreciated
Thank you in advance.

Cheers,
Jim
 
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