need help preparing phone for repair under warranty
hi there all - bought a second hand note2 (UK sim free)
it has an issue with motion sensors not working so i want to take it to be repaired under warranty but need help clean the phone
have no idea what was attempted before on this phone in regard to roms - it seems to have stock uk 4.1.2 N7100XXDME6
i have rooted it to backup the efs and so will need to unroot it. i have run triangleaway but flash counter is stuck on '1' - cant tell if it has stock or custom recovery - how do i tell? and if it has custom recovery how do i flash stock recovery? is it by flashing stock rom?
everytime i reset the rom to factory default from setting or recovery it still has root - once i unroot how do i clean all root files from my device?
can someone please help me with a list of what i need to do to the phone to make sure it will get through the repair centre?
booting into download mode it says;
product name: gt-n7100
custom binary download: no
system status: official
my kernel is
ARC S / Ultimate HD 3.0.2 / Vengence