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Updating Lenovo Laptop BIOS with USB stick

• Creating the bootable USB stick was done with Mac laptop, but the instructions should work with any Linux OS.

1. Download BIOS Update (Bootable CD) *.iso file
   • https://pcsupport.lenovo.com/at/en/products/laptops-and-netbooks/thinkpad-edge-laptops/thinkpad-e570/downloads
2. On download geteltorito.pl for extracting the BIOS.iso file (the BIOS.iso name depends on the file you downloaded). At least Rufus couldn't recognize that file, so it couldn't be used to make bootable USB stick.
   • https://userpages.uni-koblenz.de/~krienke/ftp/noarch/geteltorito/
3. On Mac/Linux commandline, set the script executable
   • chmod a+x ./geteltorito.pl