While attempting to modify firmware many of us make mistakes and end up bricking our devices. Once bricked, your device can no longer function. Since rendering a device unusable is not a desired outcome, sometimes there’s no fix without OEM support. This is especially true in the case of hard bricks.
As far as soft bricks are concerned, they are usually fixable. That holds true for the US variants of the Samsung Galaxy S III too. If you have accidentally managed to soft brick your device trying to flash a GSM boot image, you can now fix it. Since the device was launched pretty recently, users are still figuring out what will result in bricking of a device and what won’t. Apparently trying to flash a GSM boot image doesn’t go down too well but it can now be fixed thanks to an XDA developer’s member.
The process for each US variant of the device is identical. However, different files are used so make sure you use the ones meant for your specific device. The process to un-brick your device is rather simple. You will be required to simply download your phone’s stock boot image and use Odin to flash it. That’s all that needs to be done to restore your brand new Samsung Galaxy S III to working status. Please note that this process will not work if you need to restore to a stock, unrooted ROM.
Check out the guides below. (They are excerpts from the original thread).
Un-brick your Samsung Galaxy S III [Sprint]:
Anyone with a bricked phone from flashing the gsm boot image, flash this via Odin as a PDA.
It will flash a stock boot image back to your device.
1. Extract Odin files to a folder from the attachment.
How to get into Download Mode (For Odin)
1. Unplug the USB cable.
2. Shut down the phone.
3. Hold down the ‘HOME’ + ‘VOLUME DOWN’ buttons and press the ‘POWER’ button for about 2 seconds until a WARNING! Screen appears. Press the ‘VOLUME UP’ button to enter Download Mode.
2. Tick ‘Auto Reboot’ and ‘F. Reset Time’ in Odin and nothing else.
3. Download the boot image and load into Odin as a PDA.
4. Click on Start to flash the image.
http://www.mediafire.com/download.php?46fwjutr74j3v6a
DO NOT UNZIP THE BOOT TAR FILE, FLASH IT AS IT IS.
Un-brick your Samsung Galaxy S III [T-Mobile]:
Anyone with a bricked phone from flashing the gsm boot image, flash this via Odin as a PDA.
It will flash a stock boot image back to your device.
1. Extract Odin files to a folder from the attachment.
How to get into Download Mode (For Odin)
1. Unplug the USB cable.
2. Shut down the phone.
3. Hold down the ‘HOME’ + ‘VOLUME DOWN’ buttons and press the ‘POWER’ button for about 2 seconds until a WARNING! Screen appears. Press the ‘VOLUME UP’ button to enter Download Mode.
2. Tick ‘Auto Reboot’ and ‘F. Reset Time’ in Odin and nothing else.
3. Download the boot image and load into Odin as a PDA.
4. Click on Start to flash the image.
http://www.mediafire.com/download.php?i8ulpdcq4t9go41
DO NOT UNZIP THE BOOT TAR FILE, FLASH IT AS IT IS.
Un-brick your Samsung Galaxy S III [AT&T]:
Anyone with a bricked phone from flashing the gsm boot image, flash this via Odin as a PDA.
It will flash a stock boot image back to your device.
1. Extract Odin files to a folder from the attachment.
How to get into Download Mode (For Odin)
1. Unplug the USB cable.
2. Shut down the phone.
3. Hold down the ‘HOME’ + ‘VOLUME DOWN’ buttons and press the ‘POWER’ button for about 2 seconds until a WARNING! Screen appears. Press the ‘VOLUME UP’ button to enter Download Mode.
2. Tick ‘Auto Reboot’ and ‘F. Reset Time’ in Odin and nothing else.
3. Download the boot image and load into Odin as a PDA.
4. Click on Start to flash the image.
http://www.mediafire.com/download.php?crhj889aj2tricz
DO NOT UNZIP THE BOOT TAR FILE, FLASH IT AS IT IS.
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