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[T-Mobile] Rooted, now how to update firmware?

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  1. zanthal

    zanthal Well-Known Member

    Is there a guide, or a known method for upgrading the firmware on a SGH-M919 while rooted?

  2. Rukbat

    Rukbat Well-Known Member

    Unroot. Update. Root.
  3. alextop30

    alextop30 Well-Known Member

    Currently if you upgrade to 4.3 you will lock your bootloader. I would recommend you wait I will post a link later tonight hoe to update without picking up knox!
  4. zanthal

    zanthal Well-Known Member

    The two ROMs I've tried that update to 4.3 have caused my mobile network to intermittently turn off and on. Switching back to 4.2.2 made the problem go away.

    There is something fishy about 4.3, or it just doesn't like the S4

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