v1.1.1

SteamOS ARM SM8550 v1.1.1

Can download SteamOS-ARM-SM8550 image version 1.1.1 following this link

Remember

• User: steamos
• Password: set during first-boot Steam setup (empty until then)

Changes

• Kernel updated to 7.2.9
• Lossless Scaling issue fixed

Supposedly fixed:

• Inverted touch input in Gaming Mode on the AYN Thor

• Controller detection and inverted display issues on the Retroid Pocket 6

• For AYANEO devices, the system should now boot correctly. However, if you confirm that the black screen issue occurs again, I will remove AYANEO support. Its boot process is different and more complex to implement, and without having a physical device available to make and test the necessary adjustments, it becomes almost impossible to properly fine-tune remotely.

v1.1.0

SteamOS ARM SM8550 v1.1

Remember

• User: steamos
• Password: set during first-boot Steam setup (empty until then)

Highlights

• Fixed Home and QAM menus appearing behind a running game.
• MangoApp now follows the QAM performance-overlay setting, appears only
  while a game is focused, and no longer shrinks the game when menus open.
• Fixed Switch to Desktop returning to Game Mode; Plasma Wayland now
  starts reliably.
• Added a coherent, verified SM8550 graphics stack: Wayland 1.26, Vulkan
  loader 1.4.309, LLVM 19.1, project Turnip, and matching EGL/GLX/GBM/DRI.
• Prevented Lutris dependencies from replacing the verified Mesa, Wayland,
  Vulkan, LLVM, systemd, or GLVND platform libraries.
• Added Lutris and a native Linux ARM64 build of Heroic Games Launcher.
• Fixed Discover/Flatpak installation failures caused by revokefs-fuse,
  helper paths, and lost fusermount privileges.
• Fixed the Steam on-screen keyboard in Plasma.
• Fixed duplicated, stuck, or phantom keyboard/controller input when using
  USB or Bluetooth keyboards and mice.
• A short power-button press now suspends; a long press remains power-off.

Decky Loader

• Decky now runs as a Game Mode user service through Box64.
• Removed the legacy root PluginLoader service that survived session changes
  and delayed shutdown while LSFG-VK processes were active.
• Valve FEX-Emu remains restricted to Steam/Proton games and no longer
  replaces the global Box64 handler.
• Fixed Decky disappearing after reboot.
• Fixed the black screen with a cursor in the top-left corner caused by two
  Steam clients starting in the same Game Mode session.

First boot and image build

• Fixed the post-Wi-Fi update/restart loop during Steam first-time setup.
• The three-partition BOOT + root + home image is packed tightly, and
  the home partition expands to the remaining card capacity on first boot.
• Production images no longer enable persistent QAM/debug logging.
• Added reproducible build documentation and a hardware release checklist.

Installation

Install ROCKNIX ABL first, flash the v1.1 image to a microSD card, select the
correct device model in ABL, and boot Linux. The first boot can take 2–3
minutes.

• User: steamos
• Password: configured during the first-boot Steam setup

The AYN Odin 2 is tested. Other supported SM8550 devices remain untested
unless explicitly stated in the project README.

Full changelog: v1.0...v1.1

v1.0.0

###WARNING
There is a minor issue with this image: it doesn't display MangoHud, and accessing the menu renders some games inoperable.
The issue is currently being fixed.

Remember

• User: steamos
• Password: set during first-boot Steam setup (empty until then)

Install ROCKNIX ABL first. You can use the ABL installation scripts for Android. Flash the image with balenaEtcher or Rufus. On the device: Vol- → Set the Device → your model → Linux → START.

The first boot can take 2–3 minutes. The home partition grows to the rest of the card.