Big thanks to _Tim_ for his Win 8.1 image/rom. It worked a treat for me, no problems at all, and what a lot of free space on the disk with this minimal install - brilliant!
I updated my W2 to Win 10 using media creation tool - because when it wanted to upgrade itself it was in Chinese and therefore not possible for me to read. I therefore used the media creation tool on Microsoft, but after installation I had to find the drivers for various hardwares (touchscreen, physical buttons etc). That was all fine, but what ended up being the problem was that the Win 10 version installed was Win 10 Pro! Found that strange, was sure I had downloaded WIn 10 Home. When I find time I might try upgrading again manually, unless Windows gives me Win 10 soon (now the tablet is in English only I guess it will deliver me the right Win 10 version and in EN).
- Windows is 100% in English. No pre-installed Chinese, Russian and/or French language packs. (-> more free space)
- No pre-installed Office 365. (-> more free space)
- Windows Recovery Environment (winre) supports touchscreen and is 100% in English. (-> no need for external keyboard/mouse, no need to learn Chinese to navigate the menus)
- Windows 8.1 Updates 1, 2 and 3 are installed. (-> more free space)
- Latest (working) drivers are installed.
- Partition layout: 100 MB (EFI System) + 25.59 GB (Windows) + 3.00 GB (Recovery)
- Windows partition: 22.0 GB free of 25.5 GB, hiberfil.sys is 1.49 GB, pagefile.sys is 1.12 GB
- Format USB flash drive (4GB or more) as NTFS or FAT32.
- Extract winpe.zip to root of USB flash drive.
- Copy install.wim, winre.wim, CreatePartitions-WIMBoot.txt and ApplyWIMBootImage.bat to root of USB flash drive.
- Connect USB flash drive and USB keyboard to tablet.
- Turn on tablet. Press F7 and select "UEFI: 8.07" to boot from USB flash drive.
- In the command prompt window, type
diskpart /s CreatePartitions-WIMBoot.txt
ApplyWIMBootImage install.wim winre.wim