Microcode Update on Elitedesk 800 G1

[baobinhday]

Yes.

Hello, I attached these files again.

[DeathBringer]

Download my mod for Crystal Well, unpack and run:
fptw64 -a 0xE90048 -l 0xD8 -f fit_m.bin
fptw64 -a 0xF77D28 -l 0x5C18 -f ucode_m.bin

[baobinhday]

It works. Thanks for your help

[DeathBringer]

Nice news!

[eye5]

Thanks DeathBringer for the instructions to disable BIOS write protection for HP Elitedesk 800 G1! It worked for me and the following command can finish without error:
fptw64 -a 0xF77D28 -l 0x5C18 -f ucode.bin

I'd like to downgrade the BIOS on my HP Elitedesk 800 G1 from V2.78 to version V2.71 (official BIN attached) as the new BIOS makes the computer slow. Can I do it via fptw64 and how? Looking forward to your advices.

[DeathBringer]

I'd like to downgrade the BIOS on my HP Elitedesk 800 G1 from V2.78 to version V2.71

I'm not a tutor.

[ebak]

Hi I also have the same model (HP Elitedesk 800 G1 USDT) and I am also trying to get a Crystal Well CPU to work. Will this mod work for my PC or do you need the specific fit.bin and ucode.bin of my PC?

[DeathBringer]

ebak
Post a screenshot with Mainboard tab of CPU-Z.

[ebak]

Hi @DeathBringer! Here is the screenshot as requested. Thanks!

[DeathBringer]

ebak
OK. You can use these files - https://www.bios-mods.com/forum/Thread-M...#pid174268