[G Pad 8.3 General] DeanGibson:
Unrooting can be a royal pain

Perhaps my experience will help. My primary use of rooting is to enable Titanium Backup: When I get a new device, I update the numerous settings in normal apps, without the tedious process of going into each app and then trying to remember what all the customizations are. After that, rooting is mostly a curiosity.

Meanwhile, Android updates are making it more and more difficult to apply to a rooted device. Minor LG OTA updates used to succeed on a rooted device, but apparently those days are past (if the recent minor OTA update to the LG G3 is any indication). Going back and reverting to stock can be a tedious process. So, when a recent minor OTA update to the LG G3 failed due to root, I did a "Normal" LG Flash Tool replacement of the then-current system. That marked the "Software status" as "Official", and then the OTA update succeeded. In a first for me, after rooting every single Android device I've ever owned, I left the LG G3 unrooted, so as to minimize the fuss with future OTA updates.

I thought, "OK, that was easy enough" with the LG G3, so rather than postpone unrooting my two LG G-Pad 8.3 tablets until the next OTA update, I thought I'd do it now (yesterday).

That turned out to be a wise decision. So, I used the same technique as with the LG G3, and did a "Normal" LG Flash Tool replacement of the current system on both G-Pad tablets. Both G-Pad tablets were "identically" configured and rooted. On one G-Pad, the process worked fine and left the "Software status" as "Official" and unrooted. On the other "identical" G-Pad, the "Software status" remained "Modified" (and unrooted). I tried rerooting and unrooting, and then using the Flash Tool again. Nada.

OK, so I then did a "CSE" VK81022B.kdz replacement on the recalcitrant G-Pad, reinstalled all my apps (ugh), rooted using Stump, restored all my settings with Titanium Backup, and then applied the same KDZ in "Normal" mode (of course removing root), and viola! "Software status" was "Official".

I'm done, says me, and I used the Verizon/LG "Update Assistant" to update to 35B. That was apparently a mistake, because while the update worked, the "Software status" was now "Modified". Arrgghh! An attempted "Repair" told me my tablet was in such a state it could not back up my data, which made that portion of the software useless as well. I did a little experiment: I applied the 35B KDZ in "CSE" mode, and then (after initial tablet setup) immediately tried the "Repair" option again, and yes, it said the same thing: my tablet required a wipe. As a result, my opinion of the Verizon/LG "Update Assistant" tool is that it is near worthless. Uninstalled!

OK, back to virgin 22B ("CSE" mode), root, reinstall apps, restore settings, unroot (22B in "Normal" mode), and this time apply the OTA updates. That worked, and the OTA updates (23A, 24A, and 35B) came in quick succession, all over in about an hour, with "Software status" as "Official" after each step! After about ten hours of screwing around, done!

So, Timmy, I think you are doing the correct thing. The Verizon/LG site may have put a temporary lid on too many successive OTA updates from your IP address (you will note I only did the OTA sequence once). You may want to wait a day or two and try again.