I upgraded the firmware on my Chuwi Hi12 using the drivers from the Chuwi forum. It needs two USBs – one for the bios boot firmware stuff and one for the Windows 10 image. (I’m not sure how this differs from the version it came with.) It’s quite a complicated and nerve-wracking process – I followed the instructions on the Hi10 forum. But all working now. My official keyboard has been shipped so am expecting that next week sometime. I will post feedback if it arrives before anyone else’s.
Overall – quite pleased with it. Loading web pages could be faster. Recharging is painfully slow while in use – so i tend to charge overnight. It’s my first tablet and I think I will probably use it more as a laptop once the keyboard arrives. If this isn’t good then I may just exchange it all for a normal laptop – this far I have found the benefits of touchscreen to be fairly minimal.
The machine remembers your Windows serial key when you do a windows restore or update to the version posted on the Chuwi site. Nice screen. Good for the money.