Hello guys, I recently bought an 8 GB iPhone 3GS from AT&T, firmware version 4.3.3. I want to return it to the store and get a 32 GB iPhone 4. Does anyone knows if AT&T update the firmware of the iPhones that they have on stock? As all of you know, there are two new firmware versions (4.3.4 & 4.3.5) and if they updated their iPhones I won't be able to Jailbreak my new iPhone. I'll appreciate any help. Thanks in advanced!