How I managed to go from MH8 back to my CM nandroid
I flashed the UK MH8 firmware and had new bootloader and SElinux status changed.
I finally managed to change SElinux status back to permisive and restore my Nandroid of CM10.2.
I rooted MH8 using latest CF Auto root.
Revomed a ton of system apps (not sure if this helped but I Revomed all knox and security related apps)
Flashed official clockworkmod recovery image file using SGS4 Flasher.
Then booted to recovery and formated system (it finally wasnt mounted!) , data and cache.
Then I wasnt able to restore my Nandroid backup
Sent from my GT-I9505 whilst taking a s**t