Hey!! i am using iphone 4 bought from AT&T US. i am currently on IOS 4.3.3, 04.10.01 baseband, using gevey as my unlock. Now i want to update my phone to ios 6 and use applenberry's imei unlocks as my phone is still under contract and i've not registered nor have i activated my iphone with AT&T back when i made the purchase. I'm a noob, so i need some guidance on how to go about doing this procedure. should i get a unlock first, or should i update my phone first. Thanks a lot!!