Default [Q]Pre-rooted .402 FTF/Rom?

hey guys, i am working on flashing my z2 tablet back to .36 and rooting it, but i want to know if it is possible to then update it back to .402 and maintain root. do i need a prerooted .402 or can i use survival mode in chainfire's supersu?


edit:
took the plunge. put myself into survival mode and updated to .402, worked like a charm... now i just need to figure out how to get a custom recovery