One of the heads of android os engineers at google Jean Baptiste said that there is no difference between the gsm and cdma 4.1 Jelly Bean. They are both identical and the gsm versions have been running them with no problems what so ever. The nexus S, motorola xoom (wifi), gsm Galaxy nexus in europe and the states all have 4.1 running, but verizon drags its feet. I seriously doubt they work on more than one phone at a time for updates with the time frames they seem to put these out at. They seriously need to either work with Google, or hire enough competent tech staff to get these updates out to all their phones. Updates are not some irregular fad that happens infrequently, but are apart of keeping systems in check and running phones well, that keep customers happy than having to come here every time when update comes out and we have to voice our concerns and the importance of said update.