I did make a Clonezilla backup of all partitions before starting to mess with the tablet. I just tried to boot into Windows when I got it and saw it worked, so I restarted and booted Clonezilla and copied everything. I can upload it if anyone needs it. If you want to make a copy yourself just make a bootable Clonezilla distro on a USB drive.
Hi Korzsar,
can you Share the Image? I think it´s the easiest Way to Rollback Factoy defaults.