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#1 | Bios checksum and overlap issue datum

Sat Mar 27, 2021 1:39 am (Last edited: Sat Mar 27, 2021 1:40 am)

wizbee

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Posts:	60
Registered since:	07.19.2019

I have a Celeron 1037u laptop with INTEL ME 8.0 BIOS. I backed up bios with command below.

1
 
fptw64 -d bios.bin

I need to update CPU Microcode and EFI modules. I opened bios.bin with UEFITOOL but found some checksum and overlap warnning below.

The dump bios attached below.
https://dropmefiles.com/930Is
Any help?

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#2 | RE: Bios checksum and overlap issue datum

Sat Mar 27, 2021 9:02 am (Last edited: Sat Mar 27, 2021 10:35 am)

Change volume size in header to see the structure better (your bios itself doesn't care about this):

Looks like

Check Flash Map when done, this is the reference for finding the correct address for this kind of bios:

See last line 48 00 17 is address for first microcode, absolute address would be start address of bios region + relative address => 18 00 00 + 17 00 48 = 2F 00 48 for 1st microcde

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#3 | RE: Bios checksum and overlap issue datum

Sat Mar 27, 2021 5:06 pm

How to change the processor name?

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AMD Microcode update help � � [SOLVED] How to unlock MSR 0x194 for 2nd/3rd Gen CPU overclocking

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