Originally Posted by Spyro1997
I've tried to update to 4.1.2 but at the restart of the phone, after "rethink is possible" it remain on the Samsung screen... help D:
If you got to that stage, then it worked. Sometimes it takes several minutes for the rest of the set-up menu to come up after reboot. Wait for a while and if nothing comes up, pull out and replace the battery, then reboot into recovery mode. Do a hard wipe/factory reset in recovery mode and reboot.
You do not need to root your phone for this process. In fact, it may not work with a rooted phone. You can, however, still root your phone after the update and there are several ways of doing this. However, first get through the updating process and let's know how that goes.