SteamOS ROG XBOX ALLY X: Complete Setup & Tutorial Guide

Description :

This video offers a step‑by‑step guide to installing and configuring SteamOS on the ROG XBOX ALLY X handheld. It covers downloading the SteamOS image, writing it to a USB drive, disabling Secure Boot in the BIOS, booting the OS, and completing the first‑time launch. The tutorial then walks through setting up Desktop Mode with Decky Loader and SimpleDeckyTDP, installing the Gaming Mode plugin, adjusting TDP controls, testing the controller, and managing sleep mode and RGB lighting. Finally, it shows how to return to Windows. Timestamps: 00:00 - Introduction 01:00 - Download & Write SteamOS 01:46 - BIOS Disable Secure Boot 02:24 - Boot SteamOS USB 02:13 - SteamOS First Time Launch 03:46 - Desktop Mode Decky Install 04:58 - Desktop Mode Simple Decky TDP Install 05:16 - Gaming Mode Plugin Install 05:52 - TDP Controls 06:16 - Controller Test 06:49 - Sleep Mode & RGB's 07:15 - Go Back To Windows 07:36 - Thank You For Watching