I've had the 8750 version of the GPDwin since Saturday. It took about an hour to install the latest 1607 build. And just a few minutes to restore the drivers.
Sweet. What is the difference between the 2? Is it that much cleaner?
Build 1607 is Windows Anniversary update. So if you wanted Windows Subsystem for Linux, you need this build.
Think of the Anniversary edition as SP1. Running updates on it right now and then I'll do a DISM purge and kill the hibernation file. But I should have 50GB free after all is said and done.
Quick steps to reinstall Windows 10:
1.) Download Double Driver and make a full backup of drivers in compressed form
2.) Download Windows Media Creation tool and flash the iso to USB (this can be done on any computer or the GPDwin itself)
3.) Go to advanced settings and reboot off of USB disk
At this point your screen will be in portrait mode as that's the default position of the screen.
4.) Delete all Drive 0 partitions
5.) Click Next
6.) Windows 10 start-up, configure to specifications (I disable everything) Enter your username click continue
7.) Load Double Driver portable and your compressed driver back up. Restore everything. (Double Driver will auto check things that need to be installed)
8.) It invokes the Windows Device manager to install drivers.
9.) After that's done rotate screen 270 degrees (which is how you want it) and click disable rotation from Windows Notification menu.
11.) To get wifi working you need to replace a txt file in your driver directory. GPD made a batch file that you can just run as administrator, I'll re-upload somewhere else so we have it.
13.) Ta-da! You're on a clean install of anniversary edition.
Video will be up on YouTube soon.