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Root [AT&T] How to update my s4 to kitkat without re-locking???

Discussion in 'Android Devices' started by Kunnu, Jul 1, 2014.

  1. Kunnu

    Kunnu New Member
    Thread Starter

    Jul 1, 2014
    Hello guys, I need a quick help. My friend sent me a GS4(i377M) all the way from Canada. As it was locked, I made it unlocked in a local store by paying 2000 bucks(it wasn't cheap). It runs on a 4.3 version now(mentioned in about phone). I want to update it to stock kitkat without re-locking the phone. I don't know what he did or how he unlocked the phone. When I got the phone from him, it was rooted. That's all I know about the unlocking. I've got a little experience in backing up and flashing(experimented on my old Atrix2).

    So what I want to know now is whether there is a way to update my SGH I377M to stock kitkat without messing it up by re-locking the SIM again!!!

    if there is a way, please help me out in doing it.

    if there is not, can I unlock it myself after flashing it with kitkat and HOW ???

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