I have the GPD XP with firmware 3.3.1. According the internal test tool, all joystick functions are OK. But in so many games (MB 5, DH5, NOVA3, Driver, etc ), they do not work ?! There is no difference, if a XBOX or PS3 joystick is configured. I also have reset the device twice.
Further Problems: Black Screen at Asphalt 8, when the car simulations starts, at every device-start, this stupid Rockchip test tool starts ?
Does someone have the same problems ?