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[Q] Samsung GS3 i747 - Help Needed

OP Larry2999

7th February 2014, 03:04 PM   |  #1  
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Hello, I'm new to this forum although I've been following most of the threads. I have a Galaxy S3 by AT&T, unlocked and running stock 4.1.1 before I decided to flash to CM. Didn't like a few things about CM so I tried to Odin back to stock 4.1.1. Got to pass quite alright but the phone wont boot back up and now seems bricked. I've read about problems others have had with bricking trying to downgrade from stock 4.3 to other earlier versions on this particular phone model. I, however, thought this was a problem with stock rom only and CM had taken care of the dreaded knox and secure bootloader?

How do I fix this brick and get the phone back up and running? I'd greatly appreciate the steps laid out in plain English a newbie would be able to comprehend easily enough. Thanks
7th February 2014, 03:48 PM   |  #2  
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Did you go into recovery and do a factory reset?

Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app
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7th February 2014, 05:07 PM   |  #3  
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Thumbs up
Quote:
Originally Posted by shortydoggg

Did you go into recovery and do a factory reset?

Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app


Thanks very much! Just did that and it worked.
7th February 2014, 10:24 PM   |  #4  
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Update
Quote:
Originally Posted by shortydoggg

Did you go into recovery and do a factory reset?

Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app


Just wondering then if it's possible to switch to CM or any knox-free custom rom from stock 4.3 on the AT&T Galaxy S3? If so, it would seem to be a convenient workaround to the problems users have expressed trying to downgrade from 4.3 to 4.1.1 in order to free unlock their phones. I mean .. first install a custom rom and then odin back to stock 4.1.1 to unlock and, thereafter, upgrade either back to stock or a preferred custom rom? Would this be possible?
7th February 2014, 10:31 PM   |  #5  
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You can't downgrade from the stock 4.3 bootloader to an older bootloader. Trying to flash an older bootloader will brick the phone.

You need to be on stock 4.1.1 in order to use the free unlock method. A custom 4.1.1-based ROM will not have the required menu options.
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8th February 2014, 09:42 PM   |  #6  
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Quote:
Originally Posted by audit13

You can't downgrade from the stock 4.3 bootloader to an older bootloader. Trying to flash an older bootloader will brick the phone.

You need to be on stock 4.1.1 in order to use the free unlock method. A custom 4.1.1-based ROM will not have the required menu options.

Thanks. Maybe I didn't phrase my question properly ... I mean is it possible to go to from stock 4.3 to a custom ROM based on 4.3 (or newer) e.g. CM11? I understand you can't downgrade from stock 4.3 to an older bootloader which is why I'm asking if a workaround involving stock 4.3 to custom 4.3 based and then back to stock 4.1.1 is possible? I don't know if anyone has been able to successfully flash custom 4.3 based to the AT&T version of the GS3 running stock 4.3.
8th February 2014, 10:09 PM   |  #7  
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Quote:
Originally Posted by Larry2999

Thanks. Maybe I didn't phrase my question properly ... I mean is it possible to go to from stock 4.3 to a custom ROM based on 4.3 (or newer) e.g. CM11? I understand you can't downgrade from stock 4.3 to an older bootloader which is why I'm asking if a workaround involving stock 4.3 to custom 4.3 based and then back to stock 4.1.1 is possible? I don't know if anyone has been able to successfully flash custom 4.3 based to the AT&T version of the GS3 running stock 4.3.

You should be able to flash anything as long as its listed as a bootloader. I believe only kit kat ROMs have vleumk5 as a boot installer

Sent from my SAMSUNG-SGH-I747 using xda app-developers app

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