I also have the official keyboard, I bought them together from Gearbest.com. At some point I managed to get it to boot from a different USB drive within Windows and was able to complete a clean install of windows. I’ve got 99% of the drivers installed with the exception of the Camera Sensor and one other that’s stating “unknown”. Working on these things now, but the device is working well! I believe the SD card I was using is corrupt/inaccessible so I ditched it. I wish this device had the following the i9 gets on XDA :/