1. Ibnul Jaif Farabi's Avatar
    I brought my Samsung Galaxy S4 (China Unicom version) from China. It was unlocked and I was able to use it in my country pretty well. But I didn't get to install any of Google Apps. And then there's awful Chinese apps that I couldn't able to uninstall. So I downloaded AT&T Official Firmware 4.4.2 and decided to give it a try. I am thinking about install it via ODIN.

    Now my question is as my phone is currently unlocked and if I install AT&T firmware by ODIN, will it revoke my current unlocked status? Will it take the device back to the AT&T locked status?
    04-26-2015 08:15 PM
  2. Rukbat's Avatar
    SIM locking has nothing to do with the ROM you flash. However you have 2 problems:

    1) The phone might not work with an AT&T ROM. The hardware may be different. (The ROM isn't the only difference between model numbers.)

    2) The AT&T ROM has a locked bootloader. Once you flash it, you can't uninstall it. (Assuming the phone works after you install the AT&T version.) The TMobile version may be better, because it doesn't have a locked bootloader - but, again, it may brick the phone because of hardware differences.
    04-26-2015 10:28 PM
  3. Ibnul Jaif Farabi's Avatar
    My Model Number is GT-I9507V and Baseband version is I9507VZNUBNK1 . And even installing I9507 firmwares failed. Only I9507V firmwares are accepted.

    No Google apps so far and these awful Chinese bloatwares. What do I have to do?
    04-27-2015 10:07 PM

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