[apshel17]

2.3.4 ls855zvc

[gollum18]

Your phone may be updated to far. The method only works for older versions of GB. The latest ota (and probably the last) had fixed the root method.

Sent from my SPH-L710 using Tapatalk 2

[apshel17]

Then help me find a link to safely roll back the rom

[gollum18]

I could check up on it but you should be able to just flash an older GB ota in stock recovery. That should downgrade you enough.

Then when you are rooted use voodoo ota root keeper to preserve your root status, that way you can have root on the latest ota.

Sent from my SPH-L710 using Tapatalk 2

[gollum18]

Here you go an excellent guide to rooting zvc, courtesy of the unlock



Sent from my SPH-L710 using Tapatalk 2