This installation is no longer compatible with latest Steam OS versions.

Please use official installer

Troubleshooting

In case of any problem to boot SteamOS (v.3.5.5 affected) use this workaround

Install PortProton on Steam Deck

• Attention. $${\color{orangered}Install \space \color{orangered}on \space \color{orangered}stable \space \color{orangered}SteamOS \space\color{orangered}{v.3.5.7}}$$
• Start Installation in Desktop mode
• Sudo password required

1. Download script: sd-port-proton.sh

2. Open downloaded archive in Ark
   
3. Extract archive

4. Adjust executable permissions for file sd-port-proton.sh
   

5. Run script from context menu
   

6. Type your sudo password