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creshal/UEFI Thinkpad Firmware Update with systemd-boot.md

Created June 11, 2024 12:41
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UEFI Thinkpad Firmware Update with systemd-boot.md
  1. Download ISO image (foobar.iso)
  2. Install geteltorito (usually included in genisoimage) and fatcat
  3. Extract fat32 image with geteltorito -o update.img foobar.iso
  4. Create a directory to extract everything into (mkdir update_dump) and extract fat32 image into it (fatcat ./update.img -x ./update_dump)
  5. Copy update_dump/Flash to your ESP, e.g. sudo cp -r ./update_dump/Flash /boot/efi/Flash
  6. Create a systemd-boot config file at /boot/efi/loader/entries/flash.conf:
title   Firmware Updater
efi     /Flash/NoDCcheck_bootx64.efi
  1. Reboot into "Firmware Updater", follow instructions
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