> ## Content Index > Fetch the complete content index at: https://averagetechnerds.com/llms.txt > Use this file to discover other available public pages before exploring further. # How to Install SteamOS on the OneXPlayer X2 Mini Pro - URL: https://averagetechnerds.com/install-steamos-onexplayer-x2-mini-pro/ - Published: 2026-10-29T23:03:55.000Z - Updated: 2026-10-29T23:03:55.000Z - Description: Valve's SteamOS installer works on the OneXPlayer X2 Mini Pro even though Valve has never named it. The full install, what works, the power-limit fix, the sleep problem and the way back to Windows. - Author: Victor - Tags: Guides, Handheld Gaming, Handheld PCs Picture the X2 Mini Pro booting straight into Steam’s Game Mode, the same full-screen setup a Steam Deck uses, on an 8.8-inch OLED with 40 graphics compute units behind it. The X2 isn’t on Valve’s list of supported devices, but Valve’s installer goes on it anyway. I’ll take you through it from the backup to the first boot, then the two things that still need work, and the way back to Windows if it isn’t for you. Bottom line up front ## So what does this mean for the *Average TechNerd*? SteamOS goes on the X2 Mini Pro from a USB stick with Valve’s standard image, after you switch off Secure Boot as Valve advises for most hardware other than the Steam Deck. The install takes the whole internal drive, so back up Windows first. Day to day, the basics have been reported working, from Wi-Fi to video out. Changing the power limit takes a community plugin, a few buttons only half work, and sleep may freeze it, so turn it off between sessions until that’s settled. At a glance You'll need two USB sticks (8 GB or more for SteamOS, a bigger one for a Windows backup), a USB keyboard and the charger The installer Valve’s “SteamOS image for Deck/Machine/PC”, about 3.4 GB; a July 7 build of 3.8.14 After installing update to SteamOS 3.9.5 (October 23) Gets erased the whole internal drive, Windows and OneXPlayer’s recovery partition included Valve's stance beta support, as one of the “other AMD powered handhelds” OneXPlayer's stance nothing published about SteamOS or Linux for this model Reported working Wi-Fi, Bluetooth, audio, video out over USB-C Takes a plugin setting the power limit Not there yet RGB control; some extra buttons work only partly Still unknown sleep Mine the 48 GB model, still running Windows ## First, a word on support Valve keeps a short list of hardware it fully supports with SteamOS, and right now it’s four devices: its own Steam Deck, Steam Machine and Steam Frame, plus Lenovo’s Legion Go S. A second tier, which Valve calls [Beta SteamOS Support](https://help.steampowered.com/en/faqs/view/65B4-2AA3-5F37-4227?ref=averagetechnerds.com), covers other AMD handhelds, and that’s where the X2 lands. Being in that tier means you report bugs on Valve’s SteamOS page on GitHub, and Valve warns that Steam Support may not be able to help much. OneXPlayer has stayed out of it entirely. There’s no SteamOS build, no Linux driver and no statement for the X2 Mini Pro on its site. Valve’s release notes do include OneXPlayer fixes, like an OLED colour fix in SteamOS 3.8 and better support for several models in 3.8.28, but the X2 has never been named in them. My own X2 is the 48 GB version with the Ryzen AI Max+ 388 chip. I reviewed it on Windows and it’s [still on Windows](https://averagetechnerds.com/onexplayer-x2-mini-pro-review/), so everything below comes from Valve’s documentation, OneXPlayer’s support pages and what other people have reported. When I make the switch on video, this guide gets my own results. ## Backing up Windows SteamOS doesn’t share the drive. It wipes Windows and OneXPlayer’s built-in recovery partition along with everything else, so the backup you make now is your only road back, short of a fresh install of Windows and redeploying all the OneXPlayer-specific software. The backup is the easier road. Do these while Windows is still running. 1. Check that Windows is activated with a digital licence tied to your Microsoft account, under Settings, then System, then Activation. With that in place, a reinstall later doesn’t need a product key. 2. If BitLocker or device encryption is turned on, put your [recovery key](https://support.microsoft.com/help/4026181?ref=averagetechnerds.com) somewhere other than the X2\. Microsoft has no way to recreate a lost one, and changing Secure Boot or updating the BIOS can make Windows demand it. 3. Plug in the bigger USB stick and run Windows’ [Recovery Drive](https://support.microsoft.com/help/4026852?ref=averagetechnerds.com) tool (search for “Create a recovery drive”). Keep “Back up system files to the recovery drive” ticked. Everything on the stick gets erased. 4. On OneXPlayer’s Drivers and FAQs page, download the X2 Mini Pro System Pack and the drivers, and park them on another computer. You’ll need them if you ever reinstall Windows. 5. Copy your saves, screenshots and anything else that isn’t backed up online. The Recovery Drive only holds Windows itself. OneXPlayer’s page also lists a BIOS file for the X2 Mini Pro, though without a version number, so you’d have to download it to compare it with the version System Information shows on yours. If it’s newer, install it now, with the charger in, following the readme. The page also points you to OneXPlayer’s live chat for BIOS files. ## Making the installer and running it Valve’s [install page](https://help.steampowered.com/en/faqs/view/65B4-2AA3-5F37-4227?ref=averagetechnerds.com) has a download called “SteamOS image for Deck/Machine/PC”. Grab that, then write it to the 8 GB stick with [Rufus](https://rufus.ie/?ref=averagetechnerds.com) if you’re on Windows or [balenaEtcher](https://etcher.balena.io/?ref=averagetechnerds.com) on a Mac. Either one wipes the stick first. Before you plug that stick into the X2, pull out the microSD card and the Mini SSD card, and disconnect any other drives. Valve’s instructions never say which drive the installer chooses when it sees more than one, and you don’t want to find out the hard way. ![The top edge of the X2 Mini Pro, showing the microSD slot, the Mini SSD slot and a USB-C port](https://storage.ghost.io/c/b3/23/b323103c-90c0-46a8-9230-7d317a5ebaf3/content/images/2026/10/x2-review-storage-slots.jpg) The microSD and Mini SSD slots on the top edge. Empty both before you install. With the X2 off, connect the SteamOS stick, a USB keyboard and the charger. Then: 1. Power on and tap Esc on the keyboard to get into the BIOS. OneXPlayer gives Esc as the BIOS key for its handhelds. 2. Find Secure Boot and switch it off. Valve says most hardware other than the Steam Deck needs that to start its installer. 3. Choose the USB stick from the boot options. 4. Wait. The screen can sit black for around a minute before Valve’s recovery desktop shows up. If touch doesn’t respond there, a mouse will. 5. Pick Wipe Device & Install SteamOS. When it’s done, restart and follow the setup screens. Your first stop after setup should be Settings, then System, to check for updates. The image Valve hands out is a July build, SteamOS 3.8.14, and four releases have come out since, up to 3.9.5 on October 23. ## What to expect once you’re in The fullest account so far is a September video test of a 64 GB X2 on SteamOS, which [Notebookcheck](https://www.notebookcheck.net/OneXPlayer-X2-Mini-Pro-handheld-console-with-SteamOS-tested-in-AAA-games.1388362.0.html?ref=averagetechnerds.com) and [Geeky Gadgets](https://www.geeky-gadgets.com/onexplayer-x2-mini-pro-steamos/?ref=averagetechnerds.com) both wrote up. In that test, the wireless, the sound and video out over USB-C behaved. The RGB lighting couldn’t be controlled outside Windows, and some of the X2’s extra buttons only partly worked. Performance looked strong. Notebookcheck lists Forza Horizon 6 at more than 90 frames per second at 1200p and high settings on 30 watts, and Cyberpunk 2077 above 60 at the same resolution and settings on 35 watts. Crimson Desert averaged around 69 on 40 watts. With 64 GB of memory against my 48, those won’t map one to one, but my [handheld benchmarks](https://averagetechnerds.com/steam-deck-rog-ally-legion-go-2-x2-mini-pro-benchmarks/) show where the X2 lands on Windows if you want a comparison. ![The front of the X2 Mini Pro with its sticks, D-pad, face buttons and the extra buttons beside the screen](https://storage.ghost.io/c/b3/23/b323103c-90c0-46a8-9230-7d317a5ebaf3/content/images/2026/10/x2-front-buttons.jpg) The X2’s front controls. Reports say some of the extra buttons only partly work on SteamOS. ## The power limit needs a plugin On a Steam Deck you drag a slider to set how many watts the chip can use. On the X2, SteamOS’s own power control isn’t available. A community project running a different Linux system on the X2 dug into why: the X2 doesn’t expose its power limit in either of the two ways SteamOS knows how to use, and OneXPlayer doesn’t provide a Linux driver that would. The video test got around it with a Decky plugin. The common combination is [Decky Loader](https://decky.xyz/?ref=averagetechnerds.com), which lets you add plugins to Game Mode, and [SimpleDeckyTDP](https://github.com/aarron-lee/SimpleDeckyTDP?ref=averagetechnerds.com), a power plugin you install with its own script instead of through Decky’s store. Decky’s own documentation says it’s only intended for SteamOS on a Steam Deck, and that it sometimes disappears after a SteamOS update, which you fix by running its installer again. According to Geeky Gadgets, the plugin in that test went from 15 to 120 watts. Keep the standard X2 well under the top of that range. OneXPlayer rates the air-cooled model for 80 watts on the charger and 55 on battery, and saves 120 for the liquid-cooled edition with its Frost Bay cooler connected. ## Sleep might freeze it There’s no published report on sleep with stock SteamOS on the X2 yet, and there’s a reason to be careful. The same community project found that the X2 locks up completely when it goes to sleep on Linux 7.1 and 7.2, and BIOS 0.22 didn’t fix it. Holding the power button brings it back, but Wi-Fi may not show up on the first restart afterwards. SteamOS 3.9 is built on Linux 7.2, which makes the same freeze likely. The project’s fix turns off a part of the chip called the IOMMU, but that also disables the NPU and removes a layer of security for devices you plug in, and Valve doesn’t document changing those settings on SteamOS at all. My advice until there’s a real answer: test sleep before you lean on it, and shut the X2 down when you’re finished playing. ## If you want Windows as well There’s no way to have both on one drive with Valve’s installer. What you can do is give SteamOS its own drive. The X2 takes an M.2 2280 SSD, so you can take out the Windows drive, fit a spare and install SteamOS on that. To go back, put the Windows drive in and turn Secure Boot back on in the BIOS, and everything returns to how it was, though BitLocker may ask for your recovery key that first time. It’s worth reading OneXPlayer’s warranty terms before you open the X2 up. ## Going back to Windows If you decide SteamOS isn’t for you, the backup does most of the work. Turn Secure Boot back on in the BIOS, start the X2 from the Recovery Drive and let Microsoft’s recovery reinstall Windows. After that, install the System Pack and drivers you saved. A digital licence normally activates Windows by itself once you’re online. No Recovery Drive? A clean install from Microsoft’s [Windows 11 download page](https://www.microsoft.com/software-download/windows11?ref=averagetechnerds.com) gets you there too, on a blank USB stick of at least 8 GB, followed by the same OneXPlayer downloads. Have you put SteamOS on yours? If you have, does sleep work?