[T-Mobile, Samsung Galaxy SIII] KAsp3rd:
Other carriers and variants are still a work in progress

If you have a variant of the T999 other than the original T-Mobile SGH-T999 please contribute to the community and help us recover other users

If you have updated to 4.3 via OTA or flashed 4.3 firmware you will need to make sure you get the 4.3 debrick image.

Linux and Windows instructions are now included. Video only covers Linux.

Updated debrick links with zipped image files for lower bandwidth usage

I know there are some "How to unbrick" guides out there however they do no refer to an actual brick where you are stuck in QHSUSB-DLOAD mode.

The following guide will get you back to where you should be able to odin everything back to stock.

What you need:

Bricked SGH-T999

16GB or 32GB microSD card (all data will be erased from this sdcard)

microSD card reader

Linux Live Disc, VM with Linux with direct hardware control or native Linux OS. (Should work with OSx as well however I cannot confirm as I do not own one) Windows can be used, instructions below.

Everything in the ODIN guide

One of the following images based on your S III Model

SGH-T999 ***NOT FOR 4.3*** Debrick Image Thanks to [MENTION=4224764]Techlyfe[/MENTION] for the emmc dump

SGH-T999 4.3 only Debrick Image

SGH-T999L Debrick image Thanks to [MENTION=4307789]DJ_SpaRky[/MENTION] for the new T999L dump

SGH-T999N Debrick We still need one for this device

SGH-T999v ***NOT FOR 4.3*** Debrick Image

SGH-T999v 4.3 only Debrick Image [MENTION=4845222]cLogic[/MENTION] for the T999v 4.3 upload

How to get it done:

Linux Instructions

Boot your Linux OS

Download the debrick image listed in the Item's needed list

Open terminal on your Linux OS

Insert your microSD card into the reader

Plug your microSD card reader into your computer

Run

dmesg | tail

you should see something that mentions where it is mounted via /sdX

*

dd if=/path_to_debrick.img of=/dev/sdX

again where X is the microSD card ignoring the partition numbers as they should be overwritten

I had to do this a couple times for the image to actually take

*

parted /dev/sdX print

If you will see Error about the GPT table being corrupt you can type "OK" and then you will be given an option to Fix/Ignore; type "Ignore"

should show approximately 23 partitions (IIRC)

Windows Instructions

Download win32diskimager

Download your debrick image

Unzip both items and run win32diskimager

Run win32diskimager

browse for your extracted debrick image

Select your microSD in the dropdown box

Click write

Instructions required for both

remove the microSD card from the reader

remove the battery, sim and external microSD card from your device

insert your debrick microSD into your phone

insert the battery and down your power button (at this point your phone might actually boot completely and you can recovery any software/data you want)

reboot into Download mode either via adb or Volume Down + Home + Power

Once the device is booted into bootloader remove the microSD card.

follow the directions in the ODIN thread and make sure you UNCHECK partition!

* requires su privileges

Here's is a flashable zip to get the first 128M of the emmc which is what we use to create our debrick.img. It will create the debrick.img then compress it is a .zip format. Idea given to me from DocHoliday77 and used his original zip from here.

If you upload them I will mirror and link them to this post

PIT Files for ODIN when coming upon the error "PIT Partition does not exist"

Thanks to the following:

[MENTION=2300635]gTan64[/MENTION] for finding the fix while repairing their friend's phone.

[MENTION=4645794]CNexus[/MENTION] for Link to original thread here where I found the answer for this

[MENTION=4224764]Techlyfe[/MENTION] again for the SGH-T999 emmc dump

[MENTION=4081205]DocHoliday77[/MENTION] for the odin guide and software

[MENTION=4476552]Matt[/MENTION] for being Matt

[MENTION=4371572]jmcoffey[/MENTION] for the SGH-T999L dump

And My wife for letting me mess with her phone (which in turn bricked it by overwriting the apm partition)

[MENTION=4625732]deBricker[/MENTION] for their thread another walkthrough