Developer Guide

  • 2021.3
  • 11/18/2021
  • Public

UEFI Example

For systems running UEFI BIOS, the script
uses the subregion capsule tool (
) and the subregion signing tool (
) to create a capsule. You can copy and modify the script for your needs.
Path to script:
The default keys for signing the capsule are for test ONLY on Intel® boards. In a production environment, you will need to generate your own keys and work with your BIOS vendor to provision the keys into the BIOS.
Binaries for the buffer subregion should not be signed due to UEFI BIOS architecture.
For more information about the subregion capsule tool and subregion signing tool, see Firmware and BIOS Utilities (FBU).

Product and Performance Information


Performance varies by use, configuration and other factors. Learn more at