1. Android Central Question's Avatar
    I want to update my old Galaxy S4 (SGH-I337, originally AT&T, but is now carrier unlocked and using MetroPCS).

    It is currently on Android version 4.4.4, but I was thinking about following these instructions to update it to 5.0.1:
    android.gs/update-att-galaxy-s4-android-5-0-1-ucugoc3-lollipop-os/

    I don't know anything about manually updating Android versions. So before I attempt this, I wanted to ask if it is safe to follow these instructions even though the phone is no longer on AT&T's network? If I do this, will the phone stay unlocked and continue to work with MetroPCS as it does now?
    11-14-2018 04:21 PM
  2. C_Button's Avatar
    OP here,

    Apologies, I obviously meant Lollipop, not Marshmallow. Whoops!
    11-14-2018 04:30 PM
  3. Rukbat's Avatar
    Since it's no longer on AT&T, you won't get updates over the air. You'll have to find a Lollipop ROM and flash it yourself (if you're lucky, you'll find an update that someone captured.) Your best bet would be the XDA AT&T S4 forum.
    11-15-2018 11:55 AM

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