Extract Lenovo BIOS for microcode updating

[Birraque]

@plutomaniac

I have attached the latest BIOS/SPI image from Lenovo’s 76CN43WW. You can flash that directly as it should be Configured (but not dirty/Initialized). You can follow the CleanUp Guide on that SPI if you like but its not a dump so it shouldn’t be required in this case.

Hi @plutomaniac
I’m new in this Forum and would like some help.
How do you EXTRACTED Lenovo .EXE BIOS (Yoga 2 Pro) file?
Already tried with 7-zip, UniversalExtractor and PhoenixTool but without success.
Please let me know what is the correct tool and steps to do it.
Regards,

76cn43ww.zip (4.9 MB)

[wanglei52076]

You provide a backup bios file, I can give you good synthesis!
Official exe extracted rom available to you!

76CN43WW.rar (3.01 MB)

[Birraque]

@wanglei52076

You provide a backup bios file, I can give you good synthesis!
Official exe extracted rom available to you!

Thanks for your reply @wanglei52076
But I really would like to know how to do it.
Anyone with this expertise could teach us what’s the correct App/Tool and steps? @plutomaniac
Regards,

[plutomaniac]

To extract the executable you can use UniExtract by koros. The included ROM file is an Insyde container so you must not flash it directly with a programmer or general flasher such as Intel Flash Programming Tool, flashrom etc. With a little know-how you can extract the important/useful components manually (BIOS, EC) but maybe you can find some script/tool online which does that automatically? Maybe Insyde’s own flasher has such an option, I don’t know.

[Birraque]

@plutomaniac

To extract the executable you can use UniExtract by koros. The included ROM file is an Insyde container so you must not flash it directly with a programmer or general flasher such as Intel Flash Programming Tool, flashrom etc. With a little know-how you can extract the important/useful components manually (BIOS, EC) but maybe you can find some script/tool online which does that automatically? Maybe Insyde’s own flasher has such an option, I don’t know.

Thank you so much for replying @plutomaniac
Maybe extracting the BIOS (.EXE) isn’t the answer to what I’m looking for.
I would like to update the BIOS (Lenovo Yoga 2 Pro - 20266), Intel Core i7 4500U Haswell, with the Spectre Fix of Intel’s microcode. dat file.
Could you recommend the best way for this?

Regards,

[plutomaniac]

@Birraque

Your questions had nothing to do with the original thread so they got split into a new one. As for your question, wait for Lenovo to release a BIOS update for the CPU vulnerabilities. They will surely do so when it is ready.