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https://it.slashdot.org/story/22/04/19/2118232/hackers-can-infect-over-100-lenovo-models-with-unremovable-malware
except of course it comes as a windows 11/10 .exe only
I'm 99.9% certain that running that though wine would brick my laptop, so what options are there? does windows have a 'live usb' option, and is that reliable enough to flash a bios?
( not a troll question, I've genuinely not use windows for properly 15+ years - so I've not the foggiest idea )
https://bladecoder.medium.com/flash-your-lenovo-ideapad-laptop-bios-from-linux-using-uefi-capsule-updates-a82e455ea29c
It's easier for the ThinkPad models. Most are supported (to some degree) via LVFS.
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Nice one sadly no .cap file for me though :(
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I am not sure of that.
I would ask the official support how to upgrade the firmware on Linux or install Windows.
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I did, my ticket got canceled without comment :|
Guess I'll just ignore the issue >_>
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I don't know which BIOS you need to use (i.e. What's your laptop model?), but I did a little random test for myself.
I visited here and found the list of affected Lenovo laptops and chose one at random..
https://support.lenovo.com/us/en/product_security/LEN-73440#Lenovo%20Notebook
This is the one I chose:
https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/3-series/ideapad-3-14iml05/downloads/driver-list/component?name=BIOS%2FUEFI
I picked up the dxcn39ww.exe BIOS file from that page, and ran innoextract on it.
Innoextract created a new folder ( ~/codeGetExtractPath ) with similar-named file inside, e.g. DXCN39WW.exe
I opened the second file with Gnome's Archive Manager and I could access all the files. There wasn't a .CAP file but I did spot a BIOS.fd file (18.1MB). I expect this file is exactly the same thing (just a different name).
So, potentially, you could grab "that" file (for your specific model) and try out the idea mentioned earlier:
https://bladecoder.medium.com/flash-your-lenovo-ideapad-laptop-bios-from-linux-using-uefi-capsule-updates-a82e455ea29c
(using the fwupdate tool).
If you do try this, please post back and let us know how it went =P
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Yeah I found that file my self - file claims it's a
BIOS.fd: MS-DOS executable PE32+ executable (DLL) (EFI application) x86-64, for MS Windows
poking around in the file it looks to be a file system of sorts - it contains among other things some plaintext config files for H2OFFT ( a windows based bios flasher aparently ), more PE files and a ton of debug symbols.
I've no luck extracting or mounting it. but I suspect it does contain a UEFI cap file in there somewhere
My laptop model isn't listed in the hw specs here as I though it's a Legion 5 Pro 16ACH6H and uses the GKCN53WW update at the time of writing
Last edited by Guppy on 22 April 2022 at 10:32 am UTC