[Galaxy S 4 Active General] Devo7v:
Below is a collection of all known stock firmware for the AT&T i537. This thread should be used to provide links to firmware and root methods. This is not a support thread and any questions about any of the specific firmware or root methods should be asked in the threads linked below.

For instructions on how to flash any of the firmware below, please read through the [GUIDE][HOW-TO] Install Any i537 AT&T Firmware thread.

For instructions on how to root any of the firmware below, please read through the [GUIDE][HOW-TO] Root Any i537 AT&T Firmware thread.

I537UCUAMF1 (4.2.2)

Released 2013-06-20

- LEAKED

Link to thread: Thread 1

Download link: Mirror 1 1.30 GB

This file is password protected, the password is: rootzwiki

MD5: 5860a429420ff9029c8cf687f43e3d83

Modem: Download Link

NON-HLOS: Download Link

Root method: Discussion Thread

Description: This is pre-release firmware that was leaked just after the i537 was released by AT&T on June 21, 2013. This can be flashed to the phone from any other version of firmware except I537UCUBML2 (see below). Since this is pre-release firmware there is no way to receive official OTA updates. Your only options are to flash either I537UCUBMI2 or I537UCUBML2 below. There is another method to get the I537UCUAMF3 described below.

I537UCUAMF2 (4.2.2)

Released 2013-06-21

- OFFICIAL

I can't find this file, if anybody has a link please let me know and I will update this post.

Link to thread: None

Download link: None

MD5: N/A

Root method: Discussion Thread

System Dump: Link to post

Description: This is the firmware that originally came on the i537 out of the box when it was initially released by AT&T on June 21, 2013. No official firmware has been found and so currently there is no way to get back to this firmware.

I537UCUAMF3 (4.2.2)

Released 2013-06-21

- OFFICIAL

Link to thread: Discussion Thread

Download link: OTA File 18.8 MB

MD5: 9e9e28b715e8883f4d0a8665be932dcb

Updater Script: Link 1

Root method: Discussion Thread

Stock System Apps: Thread 1

Description: This firmware was released as an official OTA to I537UCUAMF2 and pushed to phones shortly after it's release on June 21, 2013. It is a minor update released as a fix for issues powering on the phone after charging. While the update has been captured, there is no way to apply this update if you're not on stock I537UCUAMF2 firmware. You can go to the Samsung Experience Shop at your local Best Buy and they should be able to flash your phone to stock I537UCUAMF3 firmware. A brief description about the update was found on Samsung's website here. More information about this can be found in this thread.

I537UCUBMI2 (4.3)

Released 2013-09-25

- LEAKED

Link to thread: Thread 1

Download link: Mirror 1 1.53 GB

Mirror 2

MD5: C49BAE7A7AA4B6C7A1CB2BD559FC552F

Root method: Discussion Thread This method has been superceded by towelroot.

Thread 2

Description: This is pre-release firmware that was leaked just before the official 4.3 OTA update was pushed to phones on January 7, 2014. This can be flashed to the phone from any other version of firmware except I537UCUBML2 (see below). Since this is pre-release firmware there is no way to receive official OTA updates. Your only options are to flash either I537UCUAMF1 above or I537UCUBML2 below. There is another method to get the I537UCUAMF3 described above.

I537UCUBML2 (4.3)

Released 2014-01-07

- OFFICIAL

IMPORTANT: IF YOU FLASH THE BOOTLOADER FOR THIS RELEASE, THERE IS NO WAY TO DOWNGRADE TO ANY OTHER FIRMWARE.

Link to thread: Odin Thread 1

Odin Thread 2

OTA Thread

Download link: Odin Mirror 1 (Link appears to be broken)

Odin Mirror 2 1.30 GB (Link appears to be broken)

Odin Mirror 3 1.3 GB

OTA File 685 MB

MD5: Odin Mirror 2: 22AB5F0835F69624AB47A14C9DC67C75

Odin Mirror 3: 22ab5f0835f69624ab47a14c9dc67c75

OTA File: F43D00ABDC4FE4D5BFB305CC6598FEB3

Root method: Discussion Thread This method has been superceded by towelroot.

Baseband & IMEI Fix: Thread

Partition File: Post with Attachment

SafeStrap for ML2: Thread 1

Description: This is the official version of Android 4.3 pushed to phones via OTA on January 7, 2014. Shortly thereafter an Odin package was posted that contains the entire firmware, not just the update package that was pushed via OTA. This firmware adds compatibility with the Samsung Galaxy Gear, enables drag and drop to uninstall or disable applications, and adds more AT&T bloat. Since new bootloaders are included in this update there is currently no other way to downgrade to any of the other firmwares. A brief changelog for the release by AT&T can be found here. Please read this important note about the ML2 bootloader before flashing, it provides a way to preserve the ability to downgrade. A listing of failed root methods and discussion for ML2 can be found in this thread.

I537UCUCNC9 (4.4.2)

Released 2014-04-16

- OFFICIAL

Link to thread: OTA Discussion Thread

S4A Android 4.4 Discussion Thread

Download link: OTA File 426 MB

MD5: OTA File: 40C941F727BBFCB5DF4097901E5D9C3A

Root method: Discussion Thread This method has been superceded by towelroot.

Baseband & IMEI Fix: Thread

Description: This is the official version of Android 4.4.2 pushed to phones via OTA on April 16, 2014. This firmware updates the phone to 4.4.2 and adds some additional features as well. A brief changelog for the release by AT&T can be found here (Screenshot). A slightly longer changelog can be found on Samsung's website here.

On April 21, 2014 AT&T and Samsung removed the ability to download the OTA due to bugs and possible bricks. AT&T has posted about the removal on its website.

In order to flash this file you must be on stock, unrooted ML2. You can then rename the downloaded OTA file to update.zip and flash it through stock recovery.

I537UCUCNE3 (4.4.2)

Released 2014-06-06

- OFFICIAL

Link to thread: Full Odin Package Discussion Thread

OTA Discussion Thread

S4A Android 4.4 Discussion Thread

Download link: Full Odin Package 1.5 GB

ML2 to NE3 OTA File 444 MB

NC9 to NE3 OTA File 66.4 MB

MD5: Full Odin Package: 59e84894b0c760e21955f1194392e61a

ML2 to NE3 OTA File: 81ec5340a739409fc1f0d9d261103888

NC9 to NE3 OTA File: b3573c696cbf4eef417e0a48a2e92aab

Root method: Discussion Thread This method has been superceded by towelroot.

Baseband & IMEI Fix: Thread

Description: This is the official version of Android 4.4.2 pushed to phones via OTA on June 6, 2014. It is a re-released version of the 4.4.2 firmware that fixes the issues that were caused by the previous 4.4.2 OTA update. A brief changelog for the release by AT&T can be found here (Screenshot). A slightly longer changelog can be found on Samsung's website here (Screenshot).

In order to flash the OTA files you must be on stock, unrooted firmware. You can then rename the downloaded OTA file to update.zip and flash it through stock recovery. If you're currently on ML2 (4.3) then flash the 444 MB file. If you're on NC9 (4.4.2) meaning you took the original 4.4.2 update that was full of bugs, then flash the 66.4 MB file. If you've rooted or modified the system in any way then you have to flash the Full Odin Package, this process will completely wipe your phone.

I537UCUCNH3 (4.4.2)

Released 2014-09-25

- OFFICIAL

Link to thread: OTA Discussion Thread

Download Link: Official NE3 to NH3 OTA Link 1 Link 2 127MB

Unofficial Flashable Zip 127MB (can only be flashed through SafeStrap)

MD5: Official OTA Link 1: 394b3c6f07911121265394df2b30a322

Link 2: 9267313f3613af47a27c0cf36892bd74

Unofficial Flashable Zip: 92b786cc7ce0e2bc9b2ca8b56e1ae3e2

Root method: In order to root NH3 you must first flash the NE3 kernel through Odin because it still has the root vulnerability. Then root using towelroot.com. Once you have rooted, flash the NH3 kernel through Odin. Discussion and further instructions about this method can be found here.

Kernels: NE3 Rootable Kernel

NH3 Original Kernel

Modifications: NH3 Mods Collection

Description: This is the official version of Android 4.4.2 pushed to phones via OTA on September 25, 2014. It is a updated version of the 4.4.2 firmware that fixes some connectivity issues. A brief changelog for the release by AT&T can be found here (Screenshot).

In order to flash the OTA files you must be on stock, unrooted NE3 firmware. You can then rename the downloaded OTA file to update.zip and flash it through stock recovery. If you've rooted or modified the system in any way then you have to flash the Full NE3 Odin Package, this process will completely wipe your phone.

I537UCUCNH4 (4.4.2)

Released 2015-08-11

- OFFICIAL

Link to thread: OTA Discussion Thread

Download Link:Official NH3 to NH4 OTA 15 MB

MD5: Official OTA: a1fcaa34b24d2ab239bb3965aefe3557

Root method: In order to root NH4 you must first flash the NE3 kernel through Odin because it still has the root vulnerability. Then root using towelroot.com. Once you have rooted, flash the NH4 kernel through Odin. Discussion and further instructions about this method can be found here.

Kernels: NE3 Rootable Kernel

NH4 Original Kernel

Modifications: NH3/NH4 Mods Collection

Description: This is the official version of Android 4.4.2 pushed to phones via OTA on August 11, 2015. It is a security update to KitKat for the i537 potentially fixing the bug in Stagefright. A brief changelog for the release by AT&T can be found here (Screenshot).

In order to flash the OTA files you must be on stock, unrooted NH3 firmware. You can then rename the downloaded OTA file to update.zip and flash it through stock recovery. If you've rooted or modified the system in any way then you have to flash the Full NE3 Odin Package and update to NH3, this process will completely wipe your phone.

I537UCUCOC6 (5.0.1)

Released 2015-04-21

- OFFICIAL

Link to thread: Discussion Thread

Download Link: Official NE3 to OC6 OTA 926MB

Official NH3 to OC6 OTA 972MB

MD5: Official NE3 to OC6 OTA: 313267bf88802c813fd041c2d1da1ec0

Official NH3 to OC6 OTA: ccdfc026e600cb1040e7c389d4fa4132

Root method: Root Discussion Thread Thanks to [MENTION=4708661]muniz_ri[/MENTION] for all his work on this.

Kernels: TBA

Modifications: TBA

Description: This is the official version of Android 5.0.1 pushed to phones via OTA on April 21, 2015. It is The first release of Lollipop for the i537. A brief changelog for the release by AT&T can be found here (Screenshot).

In order to flash the OTA files you must be on either stock, unrooted NE3 or NH3 firmware. You can then download the OTA file, rename it to update.zip and flash it through stock recovery. If you've rooted or modified the system in any way then you have to flash the Full NE3 Odin Package and update to NH3 first; this process will completely wipe your phone.

I537UCUCOC7 (5.0.1)

Released 2015-08-11

- OFFICIAL

Link to thread: Discussion Thread

Download Link: Official OC6 to OC7 OTA 280MB

MD5: Official OC6 to OC7 OTA: 2852d5150df71b29e8bbfb6de065b95b

Root method: TBA

Kernels: TBA

Modifications: TBA

Description: This is the official version of Android 5.0.1 pushed to phones via OTA on August 11, 2015. It is a security update to Lollipop for the i537 potentially fixing the bug in Stagefright. A brief changelog for the release by AT&T can be found here (Screenshot).

In order to flash the OTA files you must be on stock, unrooted OC6 firmware. You can then download the OTA file, rename it to update.zip and flash it through stock recovery. If you've rooted or modified the system in any way then you have to flash the Full NE3 Odin Package and update to OC6 first; this process will completely wipe your phone.