Hello i have a galaxy s4 from at&t sgh i337, it has been unlocked to use it with any Carrier, im using the cell phone with telcel in mexico and it seems like i can't get the 4.3 update from at&t, it says that the Phone is updated and that i have to wait 24 hours to check for updates even though the oficial update has been released, does anybody know if the unlock that i did has something to do with this? Or mi cell phone will be stuck with 4.2.2 forever? Thanks and sorry for my bad english.
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