Originally Posted by SebringTech
Okay I am on NC9. Would there be a noticeable benefit to go stock, take the NE3 update, then acquire root with towel root? I don't have any problems with my phone but my wife seems to have some issues with hers. Not sure what all the update addressed.
Sent from my SAMSUNG-SGH-I537 using Tapatalk
Unfortunately you can't just unroot and take the update. You have to go all the way back to stock by flashing the ML2 Odin package and then flash the OTA update. Flashing the Odin package will completely wipe the phone so I suggest backing up anything you want to save with Titanium Backup.
As for benefits, the NE3 update will probably fix some of the issues with your wife's phone and put her on the latest version, but functionally it should be the same as NC9. Samsung didn't add any additional features or functionality to the NE3 update, they just fixed all the bugs they created with the NC9 OTA. Rooting is super simple now with towelroot so you shouldn't consider that a deterrent.
If you want to try to fix some bugs then update to NE3, if you're perfectly happy with the way your phone is running now then you're not missing out on anything.
If you ever have questions about firmware and updates again, check the Firmware Thread
first. I try to keep that updated as soon as I hear about new firmware.