Can we play GPD XD Game handheld via Controller? Can we play GPD XD gaming tablet on HDTV? Yes, things you want are the HDMI cable and the OTG cable. Check how this happens in this video:
The GPD V3.3.2 English firmware mainly solved the whining noise issue. Please download from here: https://drive.google.com/file/d/0BzQrmkbSp3-ac3ZvMjRNako3b1U/view?usp=sharing
There also batch tool,driver assistant and install instructions included.