No need to make a long post for that : 1. I was retarded enough to try insider on my surface pro 2. I received a beta firmware udpate in the process, which is broken 3. since it's firmware, wiping windows and installing it back had no impact whatsoever on it. These firmware updates are pushed through windows update, it is a combination of 3 files : one *.inf file (driver) one *.cat file (driver related again) one *.bin file (firmware update). i can manually install the *.inf file, but it won't install the firmware update in the process (probably because the one i try to install is older that the recent insider firmware in place). I thought of using freedos, but the surface pro are UEFI only. Any advise?