Not sure if anyone has posted about this yet but, yesterday I just happened to check for an update and there was a update. I downloaded it and I went to shutdown my Tab 2 10.1(wi-fi only version) and it shutdown right and never did its restart thing that it has been doing since the Jellybean 4.2.2 update. I don't know if everyone has the update right now or if they are rolling it out slowly. I would just check your Tab 2 to see if you have it yet. I did not do this over Kies it was OTA(Over the Air).