The Samsung ATIV Tab (GT-P8510) shipped with Windows RT 8.1, a dead OS. Here is the technical process to jailbreak it and install full Windows 10 (ARM32).
B-roll of the tablet, close-up of Windows RT 8.1 home screen, then cut to Windows 10 booting. samsung ativ tab gt-p8510 install windows 10
I have broken it into two versions: a and a YouTube Video Script . Version 1: Written Guide (Blog/Forum Post) Title: Breathe New Life into Your Samsung ATIV Tab GT-P8510: A Guide to Installing Windows 10 The Samsung ATIV Tab (GT-P8510) shipped with Windows RT 8