steamos-update

Update SteamOS

$ steamos-update

$ steamos-update check

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.

(no argument)

Download and install available updates

Check if updates are available without installing

Requires network connectivity. Updates may require significant download sizes. The system will reboot after installation. Update availability depends on the selected branch (stable, beta, or main).

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)