I tried a factory reset and this was a pain. I finally could access the bios menu, and reinstall Windows from scratch. But OXP center don't ork, even without changing system language. Then I configured to my language because if OXP center doesn't work, I'm not sure it's a language story...
What is surprising, is that I can change the LED with Home+Vol- (so something in the bakground should work).
When I launch OXP center, nothing happens, but there is something in the task manager (Home+Keyboard). But it doesn't seem to work right. Because the app never opens, and I can only close it in the Task manager...
Another surprise is that I could launch OXP center when the device was all new, but now no more... What the hell...?!?
It's really a pain, and support is really lacking about this bug. I beg you OneXplayer support to really do something for players.
In my opinion, you should collaborate with Valve so we could have the last version of SteamOS. Not sure it's perfect, but it's not hard to be better than this OXP center that doesn't work.