Originally Posted by caloyzki
im about to root my phone now. if ever i want to unroot my phone. before doing the back up, after i hit the back up from twrp there is already 4 checked boxes, should i put a mark on all of the boxes? then swipe for back up? or just the 4 mark i need to back up?
If you ever want to unroot,
1 - Odin UVUAMDL stock rom
. This will unroot you
and to get everything to say Official instead of Custom,
2 - Use CF-Auto-Root from the XDA thread
. Just install it through PDA in Odin. (see his 2nd post for instructions) Now you're rooted with stock recovery so you can use Triangle Away.
3 - Use Triangle Away
. Follow the directions exactly.
4 - After phone reboots, go back to stock recovery, do a factory reset and wipe cache partition.
Everything in Odin mode and in settings About Device should all say Official now.
Are you talking about doing a backup in TWRP? When I select backup there are only 3 boxes checked by default, Boot, System and Data. That's all you need to backup.
To wipe before you install a rom, you can read this post
if you haven't already.