To update the BIOS via UEFI EFI Shell on Vecow systems, enter the BIOS menu to disable the BIOS Lock under Chipset PCH-IO Configuration and save the changes. Next, extract the BIOS update files onto a USB drive, insert it into the system, and press F7 during boot to select the UEFI Built-in EFI Shell. Finally, navigate to the USB drive path and execute the BiosUpd.nsh script to complete the update.
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