in the meantime if you ssh / connect via samba to your device if you delete the gamecontrollerdb.txt file in .config/SDLgamecontrollerdb/gamecontrollerdb.txt and recreate the file with only this line it will fix it.

03001354474f2d556c74726120476100,GO-Ultra Gamepad,platform:Linux,a:b1,b:b0,dpdown:b15,dpleft:b16,guide:b11,+lefty:+a1,-leftx:-a0,+leftx:+a0,-lefty:-a1,leftshoulder:b5,leftstick:b12,lefttrigger:b7,dpright:b17,+righty:+a3,-rightx:-a2,+rightx:+a2,-righty:-a3,rightshoulder:b6,rightstick:b13,righttrigger:b8,back:b9,start:b10,dpup:b14,x:b3,y:b4,