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Microcode Update on Elitedesk 800 G1
#21
(08-31-2020, 11:24 PM)DeathBringer Wrote: Yes.
Hello, I attached these files again.


Attached Files
.bin   fit.bin (Size: 216 bytes / Downloads: 3)
.bin   ucode.bin (Size: 23.02 KB / Downloads: 5)
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#22
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
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#23
It works. Thanks for your help Big Grin
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#24
Nice news!
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#25
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.


Attached Files
.bin   L01_0271.BIN (Size: 16 MB / Downloads: 6)
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#26
(11-06-2021, 10:00 PM)eye5 Wrote: 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.
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#27
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?
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#28
ebak
Post a screenshot with Mainboard tab of CPU-Z.
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#29
Hi @DeathBringer! Here is the screenshot as requested. Thanks!


Attached Files Thumbnail(s)
   
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#30
ebak
OK. You can use these files - https://www.bios-mods.com/forum/Thread-M...#pid174268
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