steamos-update

steamos-update [COMMAND]

steamos-update updates SteamOS to the latest available version on the selected branch. Updates are downloaded and installed to the inactive A/B partition, then the system reboots to the updated partition.The A/B partition scheme ensures a reliable fallback if an update fails - the previous working partition remains available for recovery.steamos-update returns exit code 0 when an update was applied or is available (depending on subcommand), and 7 when the system is already up to date (useful for scripting).

(no argument)

Download and install available updates

Check if updates are available without installing

Requires network connectivity and root privileges to apply updates. Updates can be large. The system reboots into the updated partition after installation. Update availability depends on the selected branch (stable, beta, or main), chosen with steamos-select-branch. Running on non-SteamOS systems is not supported.

steamos-update is part of the SteamOS utilities developed by Valve. SteamOS 3.0 uses an image-based update system similar to Chrome OS and Android, ensuring atomic updates and easy rollback.

steamos-select-branch(1), steamos-finalize-install(1), steamos-readonly(1)