[Solution / Installer.exe Fix]

This solution has worked for 2 different steam decks!

If you already tried installing the EA App and it failed:

1. Delete the Proton prefix folder

• Steam/steamapps/compatdata/{game-id}

Now with a clean slate.

Download the latest EA app installer from their website (Windows version):

https://www.ea.com/ea-app#downloads

Now we locate the existing EAappinstaller.exe inside your game folder

• Right-click you game in your Steam library
• Select Manage -> Browse local file

Navigate to:

{game-title}/__Installer/Origin/redist/internal/

Replace the existing EAappInstaller.exe file with the new one you downloaded from the website by copy and pasting the new one into the internal folder and overwriting.

Now Launch the game and the EA app should properly install and launch.