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  1. Thread Author  Thread Author    #1  
    tics01's Avatar

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    Default Galaxy S3 AT&T Firmware

    Currently have a Galaxy S3 with firmware from Movistar. I want to change it to the AT&T firmware.
    What is the process? Thanks
  2. #2  
    Golfdriver97's Avatar

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    Default Re: Galaxy S3 AT&T Firmware

    So you are running a custom ROM?

    Devices: Current: Nexus 5, Moto X, Galaxy Tab 2 (7.0); Retired: Galaxy S2 (Epic 4G Touch); Traded: Galaxy S3
    When I let go of what I am, I become what I might be - Lao Tzu
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  3. Thread Author  Thread Author    #3  
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    Default Re: Galaxy S3 AT&T Firmware

    No, it is a stock ROM from Claro of Puerto Rico.
    I want to change it to AT&T Rom
  4. #4  
    Golfdriver97's Avatar

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    Default Re: Galaxy S3 AT&T Firmware

    Are you on AT&T?

    From a Sprint Moto X using the AC Forums app.

    Devices: Current: Nexus 5, Moto X, Galaxy Tab 2 (7.0); Retired: Galaxy S2 (Epic 4G Touch); Traded: Galaxy S3
    When I let go of what I am, I become what I might be - Lao Tzu
    Community Guidelines and also here
  5. Thread Author  Thread Author    #5  
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    Default Re: Galaxy S3 AT&T Firmware

    Quote Originally Posted by Golfdriver97 View Post
    Are you on AT&T?

    From a Sprint Moto X using the AC Forums app.
    No, Claro from puerto rico
  6. #6  
    Golfdriver97's Avatar

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    Default Re: Galaxy S3 AT&T Firmware

    I'm not sure if that will work.

    From a Sprint Moto X using the AC Forums app.

    Devices: Current: Nexus 5, Moto X, Galaxy Tab 2 (7.0); Retired: Galaxy S2 (Epic 4G Touch); Traded: Galaxy S3
    When I let go of what I am, I become what I might be - Lao Tzu
    Community Guidelines and also here
  7. Thread Author  Thread Author    #7  
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    Default Re: Galaxy S3 AT&T Firmware

    Is there a program that can replace the stock ROM with the AT&T ROM? I have the firmware, just need the program
  8. #8  

    Default Re: Galaxy S3 AT&T Firmware

    Sure, just search for Odin (an application for Windows-based computers). You can use that to load any firmware to your phone - just don't blame us if your phone is only usable as a paperweight after you flash an unsupported ROM.

    Edit: if it boots at all, be sure to boot into Recovery mode and clear the cache and perform a Factory Reset before attempting to setup the phone.

    Sent from my rooted, debloated, deodexed Sinclair ZX-80 running CM 10.2 using Tapatalk 4
  9. Thread Author  Thread Author    #9  
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    Default Re: Galaxy S3 AT&T Firmware

    Thanks,
    How will I know if the Rom is supported or not?
  10. #10  

    Default Re: Galaxy S3 AT&T Firmware

    Is Claro (or Movistar) a MVNO (Mobile Virtual Network Operator) using AT&T infrastructure? If so then you may be able to safely load the firmware that you found.

    You never did say what model and firmware you currently have, or why you want to load the AT&T firmware.

    Frankly, people in your region would be the best resource - I've never heard of the provider that you have, and wouldn't want to steer you wrong.

    All I can tell you is that Odin will allow you to load any firmware that you want - that doesn't mean that your phone will work when you're done. This isn't something to be taken lightly, or to 'fool around with'.

    Sent from my rooted, debloated, deodexed Sinclair ZX-80 running CM 10.2 using Tapatalk 4
  11. Thread Author  Thread Author    #11  
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    Default Re: Galaxy S3 AT&T Firmware

    The reason is because I like the AT&T layout (not sure what you call it) better. The way the icons, background, apps and all the comes with a stock AT&T phone. The Claro Galaxy has a different layout.
    Is there a different way to do this?
  12. #12  
    UJ95x's Avatar

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    Default Re: Galaxy S3 AT&T Firmware

    Quote Originally Posted by tics01 View Post
    The reason is because I like the AT&T layout (not sure what you call it) better. The way the icons, background, apps and all the comes with a stock AT&T phone. The Claro Galaxy has a different layout.
    Is there a different way to do this?
    Flashing the firmware of a different model can potentially brick your phone, unless you bought it from AT&T in the U.S. I'd advise against it

    Posted via Android Central App
    Everything in this post is 100% accurate...I think

    R.I.P. Motorola...and what could have been the best smartphone line ever
    Golfdriver97 likes this.
  13. #13  

    Default Re: Galaxy S3 AT&T Firmware

    Quote Originally Posted by UJ95x View Post
    Flashing the firmware of a different model can potentially brick your phone, unless you bought it from AT&T in the U.S. I'd advise against it

    Posted via Android Central App
    ditto

    there are several variants of the S3, the European version with a quad core processor, and the US version with a dual core. In the US version there are differences in the antenna which is carrier dependent.
    I know for a fact that flashing a Euro with a US firmware will brick it and vice versa because among other things, the processor is different.

    DO NOT flash your phone with another carriers firmware. If you want a different look, head over to XDA and see if you can find a firmware for YOUR phone that has been modded.

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