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  • 1 Post By Rukbat
  1. Thread Author  Thread Author    #1  

    Default Restoring a Nandroid after a JTAG repair

    Alright, so I hardbricked my I747M from Rogers phone after trying to flash a different models bootloader... but thankfully I made a nandroid on my extSD Card right before.

    I am getting it repaired from my local JTAG guy and it's either going to be running 4.1.2 (last time it was at 4.1.2) or the latest 4.3 update from Rogers. (I have no idea which version it will be)

    How do I take the steps to restore the nandroid I have on my extSD Card to my phone without bricking?

    Do I flash CWM and just restore from there? Or do I have to flash the latest bootloaders and then restore through CWM?

    Thank you guys in advance for the help
  2. #2  
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    Default Re: Restoring a Nandroid after a JTAG repair

    Quote Originally Posted by juanhbk1 View Post
    Alright, so I hardbricked my I747M from Rogers phone after trying to flash a different models bootloader... but thankfully I made a nandroid on my extSD Card right before.

    I am getting it repaired from my local JTAG guy and it's either going to be running 4.1.2 (last time it was at 4.1.2) or the latest 4.3 update from Rogers. (I have no idea which version it will be)

    How do I take the steps to restore the nandroid I have on my extSD Card to my phone without bricking?

    Do I flash CWM and just restore from there? Or do I have to flash the latest bootloaders and then restore through CWM?

    Thank you guys in advance for the help
    Welcome to the forums.
    You should be able to flash just CWM, then restore your Nandroid.

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  3. Thread Author  Thread Author    #3  

    Default Re: Restoring a Nandroid after a JTAG repair

    Thanks for the help! Long time lurker and finally got a problem I couldn't solve myself.

    So the worst thing that could happen right now if I flash CWM and restore the nandroid is a soft bricked device? I'm okay with trying whatever, I just don't want to end up with a hard bricked device.

    Can you also point me to the updated bootloader for the Canadian S3? Or do I even need it?

    Thanks again for the help
  4. #4  
    UJ95x's Avatar

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    Default Re: Restoring a Nandroid after a JTAG repair

    Quote Originally Posted by juanhbk1 View Post
    Thanks for the help! Long time lurker and finally got a problem I couldn't solve myself.

    So the worst thing that could happen right now if I flash CWM and restore the nandroid is a soft bricked device? I'm okay with trying whatever, I just don't want to end up with a hard bricked device.

    Can you also point me to the updated bootloader for the Canadian S3? Or do I even need it?

    Thanks again for the help
    Yeah, I don't see why it wouldn't work. Worst case scenario it's soft-bricked or fails to flash.
    What do you mean by latest bootloader?

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  5. Thread Author  Thread Author    #5  

    Default Re: Restoring a Nandroid after a JTAG repair

    Quote Originally Posted by UJ95x View Post
    Yeah, I don't see why it wouldn't work. Worst case scenario it's soft-bricked or fails to flash.
    What do you mean by latest bootloader?

    Posted via Android Central App
    Before I could upgrade my S3 to a KitKat rom, I recall I had to update my bootloader, but if you say I don't have to then I'll just try flashing CWM with Odin and restoring my Nandroid.

    Thanks for the help and I'll come back in a few hours with the results.
  6. #6  
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    Default Re: Restoring a Nandroid after a JTAG repair

    Quote Originally Posted by juanhbk1 View Post
    Before I could upgrade my S3 to a KitKat rom, I recall I had to update my bootloader, but if you say I don't have to then I'll just try flashing CWM with Odin and restoring my Nandroid.

    Thanks for the help and I'll come back in a few hours with the results.
    Update or unlock it? Never heard of updating the bootloader O_o

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  7. Thread Author  Thread Author    #7  

    Default Re: Restoring a Nandroid after a JTAG repair

    Quote Originally Posted by UJ95x View Post
    Update or unlock it? Never heard of updating the bootloader O_o

    Posted via Android Central App
    Okay, well let's say I unlocked it, would I need to unlock it again before restoring the nandroid? Or would flashing CWM do the trick?
  8. #8  
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    Default Re: Restoring a Nandroid after a JTAG repair

    Quote Originally Posted by UJ95x View Post
    Update or unlock it? Never heard of updating the bootloader O_o

    Posted via Android Central App
    Normally would update with the OS.

    - - - Updated - - -

    Quote Originally Posted by juanhbk1 View Post
    Okay, well let's say I unlocked it, would I need to unlock it again before restoring the nandroid? Or would flashing CWM do the trick?
    I would assume so, yes.

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    Default Re: Restoring a Nandroid after a JTAG repair

    Quote Originally Posted by juanhbk1 View Post
    Okay, well let's say I unlocked it, would I need to unlock it again before restoring the nandroid? Or would flashing CWM do the trick?
    I don't know, that depends on what they did with the phone. Not sure exactly what the JTAG does, but I'd try and unlock it just in case

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  10. #10  
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    Default Re: Restoring a Nandroid after a JTAG repair

    JTAG basically force-feeds the firmware to storage without regard for whether the phone is soft-bricked, hard-bricked or even in a tight loop with interrupts disabled.

    But, remember, 4.3 is a bit tighter locked-down than 4.2. It may not be that easy to Odin a CWM to it. I have no idea what Rogers did. (AT&T and Verizon welded it shut. No custom recovery yet, and no real way to flash a ROM. At least it can still be rooted.)
    Golfdriver97 likes this.
  11. #11  
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    Default Re: Restoring a Nandroid after a JTAG repair

    Quote Originally Posted by Rukbat View Post
    JTAG basically force-feeds the firmware to storage without regard for whether the phone is soft-bricked, hard-bricked or even in a tight loop with interrupts disabled.

    But, remember, 4.3 is a bit tighter locked-down than 4.2. It may not be that easy to Odin a CWM to it. I have no idea what Rogers did. (AT&T and Verizon welded it shut. No custom recovery yet, and no real way to flash a ROM. At least it can still be rooted.)
    So it's basically doing what flashing a stock ROM would do? Would that re-lock the bootloader?

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  12. #12  
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    Default Re: Restoring a Nandroid after a JTAG repair

    Quote Originally Posted by UJ95x View Post
    So it's basically doing what flashing a stock ROM would do? Would that re-lock the bootloader?

    Posted via Android Central App
    Kinda more like an ADB push. Forcefully. But even JTAG has limitations. They don't always work.

    Sent from my Nexus 5 using AC Forums mobile app

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  13. #13  
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    Default Re: Restoring a Nandroid after a JTAG repair

    Quote Originally Posted by Golfdriver97 View Post
    Kinda more like an ADB push. Forcefully. But even JTAG has limitations. They don't always work.

    Sent from my Nexus 5 using AC Forums mobile app
    If it works for him though, would he have to unlock again? I'm a noob XD

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  14. #14  
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    Default Re: Restoring a Nandroid after a JTAG repair

    Quote Originally Posted by UJ95x View Post
    If it works for him though, would he have to unlock again? I'm a noob XD

    Posted via Android Central App
    Not sure. Never had to use one.

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