This tool attempts to extract a VBIOS from a bios update
Laptops with NVIDIA Optimus graphics often have the dGPU VBIOS integrated in their system BIOS, this makes extracting the VBIOS a complicated process. Provided you have a BIOS Update for your laptop, this tool might be able to automagically extract all available VBIOS from it.
- Ruby
- bundler (a ruby gem)
- UEFIExtract (note: UEFIExtract can be found in the branch
new_engine) - rom-parser
- p7zip (optional)
- innoextract (optional)
- upx (optional)
Some dependencies might not offer a package for your linux distribution (like UEFIDump and rom-parser). The binaries can be placed in ./3rdparty to avoid having to install them.
- Run
bundle install --path=vendor/bundleto install the required ruby modules (once) - Run
./vbiosfinder extract /path/to/bios_update.exeto attempt an extraction - A temporary working dir is created at
./tmp-vbiosfinderwhich can be removed inbetween runs - Extracted VBIOS roms will be placed in
./output
-
Lenovo y50-70
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note: if your device isn't listed here, feel free to try this tool and report your results!
Q: There are no files in ./output after running the tool!
A: It's very possible that VBiosFinder can't extract your type of BIOS update right now. Feel free to open an issue with a link to your bios update and the program output you get!
- Add option to extract the bios of the running system (can we?)
Clean up temporary working dir after finishing updone- Test with more BIOS updates
This project, initially authored by Robin Broda, is licensed under the GNU Affero General Public License v3
A copy of the license is available in LICENSE.txt