SteamOS 3.7.7 Beta: Sunny & Gizmo
Note: This update is for the Steam Deck Beta and Preview channels, and includes new features that are still being tested. You can opt into this in Settings > System > System Update Channel.
General
Added Battery Charge Limit control to Settings -> Power
This option allows you to set a maximum charge limit for your Steam Deck.
Limiting the charge limit to 80% can be beneficial for long term battery health. This can be useful if your Steam Deck is constantly being charged (e.g. docked), or very rarely has its battery depleted.
Fixed a case where the performance overlay could spuriously appear and could not be disabled
Fixed an issue where exiting a game from the overlay could result in the UI getting stuck until a button is pressed
Desktop mode will no longer erroneously nag the user to install power profiles daemon
Added support for updating controller and system firmware on the Legion Go S