Ok so I am an unlocker its the only reason i JB my phone is so i can use it on T-Mobile and now im to the point where ill just start buying Factory unlocked phones so im not in this same position. My backup phone is a 3GS running 05.16.02 version 4.3.1. I was thinking of doing the iPad update and move it to i think its 6.15.00 but what im looking for is the cons for this. If i can even do that wont i have problems with getting any other OS on there until they pass the 6.15? What other problems will i have by doing this? It is my backup phone that got updated by my daughter so its not like i need to do it right now but i was just thinking of selling it for about $200 and putting that t words a iPhone 4 that's Factory unlocked. I know the iPhone 5 will be coming and ill be getting that too but right now the phone is just sitting there as an alarm clock to wake me up and i figured i would sell this one if i unlock it. and only buy Factory unlocked ones. In short whats the pros and cons of doing the iPad 6.15.00 update?