Almost all variants of the Galaxy S7 have already received the Nougat update and now the Korean giant seems to have turned its eye to our good old Galaxy S6. While the international models of the phone got the Nougat OTA more than a week ago, the users of the AT&T variant have not started receiving it.

Since the full Android Nougat firmware for the device is not available anywhere, you will have to flash the OTA zip packages depending on your current firmware version in incremental order. In this tutorial, we’ll see how we can install Android Nougat on s6.

If you have not been able to get the official Nougat OTA on your AT&T Galaxy S6 (SM-G920A) or S6 Edge (SM-G925A), you can update your phone’s software by installing the OTA zips provided below.


Please note that your AT&T Galaxy S6/S6 must be fully stock to install the OTA. Though we have taken utmost care in laying out the installation steps, a successful installation depends on how you follow them. Proceed at your own responsibility and don’t go ahead if you don’t understand at all what you are going to do.

Getting Prepared

Before you proceed, here’re a few preparations you need to make so that things go smoothly for you.

  • Backup all your data and apps using Smart Switch as a precaution.
  • Go to Settings> Personal> Lockscreen and security> Find my mobile and turn off Reactivation Lock.
  • Go to Settings> Developer options and enable USB debugging (this is just as a precaution).
  • If you have disabled any system apps, please enable them from Settings> Applications or the OTA file installation might fail.
  • Charge your Galaxy S6 so that it has 60% battery level at least.


UPDATE: April 12, 2017)

If you own the AT&T Galaxy S6 (SM-G920A), you don’t need to download the OTA files listed below to update your phone to Nougat. Just download the following firmware and install it using Odin. You can install the firmware over any firmware version.

AT&T Galaxy S6 (SM-G920A) Nougat Firmware:

G920AATT6EQK3.rar (latest available firmware)

Firmware installation tutorial: Link

Inside the firmware folder, you will get the following 4 files (extract all 4 “.rar” files to get the “.tar.md5” files):

AP_G920AUCS6DQC1_CL9462607_QB12845089_REV02_user_l ow_ship.tar.rar
BL_G920AUCS6DQC1_CL9462607_QB12845089_REV02_user_l ow_ship.tar.rar
CP_G920AUCS6DQC1_CL9462607_QB12845089_REV02_user_l ow_ship.tar.rar
CSC_ATT_G920AATT6DQC1_CL9462607_QB12845089_REV02_u ser_low_ship.tar.rar


Download OTA Zips for AT&T Galaxy S6 (SM-G920A)

Having installed the QC1 firmware, download the G920AUCS6DQC1 to U6EQCF update OTA zip file from below and install it using the steps described in ADB sideloading method below.

Official Nougat OTA Zip:

Note: Please read this before you start downloading the OTA zip files linked below. Go to Settings> About device> Software info and check your phone current firmware version. Suppose your Galaxy S6’s firmware version is G920AUCS5DPK5, you need to download and install the file that says PK5 to QA8, then QA8 to QB8 and so on one after another.

Android 6.01 Marshmallow OTA zips

Android 7.0 Nougat OTA zips


UPDATE: April 12, 2017)

If you own the AT&T Galaxy S6 Edge (SM-G925A), you don’t need to download the OTA files listed below to update your phone to Nougat. Just download the following firmware and install it using Odin. You can install the Nougat firmware over any firmware version.

T&T Galaxy S6 Edge (SM-G925A) Nougat Firmware: (latest)

Firmware installation tutorial: Link

Inside the firmware folder, you will get the following 4 files (extract all 5 “.rar” files to get the “.tar.md5” files):

AP_G925AUCS7ERA2_CL12599862_QB16477459_REV02_user_ low_ship_meta.tar.md5
BL_G925AUCS7ERA2_CL12599862_QB16477459_REV02_user_ low_ship.tar.md5
CP_G925AUCS7ERA2_CP8629153_CL12599862_QB16477459_R EV02_user_low_ship.tar.md5
CSC_ATT_G925AATT7ERA2_CL12599862_QB16477459_REV02_ user_low_ship.tar.md5


Installing the OTA Zips on AT&T Galaxy S6/ S6 Edge via ADB Sideloading

Warning: if you go for this method, your phone’s apps and data will be wiped.

  1. Download ADB and fastboot tools and extract the downloaded zip on your desktop.
  2. Make sure to enable USB Debugging on your phone.
  3. Install the Samsung USB drivers on your computer.
  4. Now turn off your Samsung Galaxy S6 and reboot it into the Recovery mode by pressing and holding the Volume Up + Home + Power buttons at the same time for 4-6 seconds. When you see the recovery screen, release the 3 keys.
  5. Scroll down to apply update via adb option using the Volume down key and select it by pressing the Power key.
  6. Connect your phone to the computer via a USB cable.
  7. Now open the adb folder, and copy the downloaded update zip file (, for example) to it.
  8. Place the mouse pointer at any empty space inside the folder window, and press Shift + right click on the mouse and select “Open command window here” option.
  9. When the command window is launched, type the following command and press the Enter key to check that your device is properly connected.
    adb devices
  10. If you see a string of characters as result, you are good to go.
  11. Now type the following command followed by the name of the OTA zip file you want to install. Here’s an example:
    adb sideload
  12. Press the Enter key.
  13. You must install the OTA files in incremental order. You also need to wait patiently while the files are installed. Your phone may appear frozen during this process so don’t panic.

Done! Enjoy the newly installed Android Nougat on your AT&T Galaxy S6/S6 Edge.


  1. Hi Rakesh, I have a samsung SM-G925A, I followed the steps and I’m stuck in the .zip file. I removed the usb and now I’m getting an error “An error has occurred while updating the device software.Use the emergency function in the smart switch software. I tried downloading the Smart switch and it looks like I’m getting a c++ library error. Now I’m stuck..

  2. One addition. After I used the instructions in the April 12, 2017 update section, the phone started back up and worked fine, but only showed 9GB or so of storage on my 64GB phone. I saw the solution on another site, so am passing it along here. All you need to do is one more step which is to reset the phone to factory. Could be painful for some, but this my old phone and I’m using it for music control and a few other things so I didn’t care. Once I did the reset, I could see the entire 64GB of storage. This flashed my phone to the December, 2017 update. Do you know if more current version are available? Thanks again! Such an easy process!

  3. Hi, mi phone is S6 SM G920A whit the baseband g920aucs4cpg1, i can update to nougat whitout any problem like that knox, fingerprints, memory and general?

  4. Hi. I’m from mexico, I bougth a s6 edge ( g925A) and it has android 6 baseband version g925aucu3cpd6, What files must I download?

  5. Hey there, My baseband/firmware version is G920AUCS4CPF1 and android version is 6.0.1 You say that the OTAs need to be installed in sequential order, but I’m not sure what comes after 4CPF1. Thanks.

  6. I want to update my Samsung Galaxy S6 SM-G920A to Android 7.0, my phone is unlocked and at this moment I live in Venezuela, how can I do it without loss the unlocked? Thanks you

    My Firmare are G920AUCS4CPG1

  7. would someone please help me i want to update my galaxy s6 sm-g920a to android 7.0 but i live on Ecuador how can i do it?

  8. Very bad for me because after I updated to android 7.0.1 my phone (At&t unlocked) stopped working on T-mobile MVNO. Is there a way to flash it to at least android 7.0 (the first version)? Thanks very much Rakesh

  9. I am afraid you’ll not be able to downgrade. Greater versions of bootloader don’t let themselves overwritten by lesser ones.

  10. Hi! I’d like to downgrade my firmware version G925AUCS6EQJ2 (Android 7.0.1) to Android 6.0.1. Android 7 is not working properly for me. What can I do? What firmware should I use?
    Thanks a lot

  11. hey, valentina ..kindly tell me which package did you download in the first place as there is not one with your baseband version

  12. Sure, just install it and perform a data factory reset after installing the firmware. The bootloop issue should be fixed. Good luck!

  13. Hey , Rakesh ! ..can you tell me ,can i install latest firmware if my baseband version is sm-g920aucu3boi2 because i don’t see this version’s file link here.i am currently on lollipop at&t

  14. I tried installing but i get this error

    Userexpect build fingerprint: samsung/zeroflteuc/zerofleatt:6.0.1/MMN29K/G920AYS5DPK1:user/release-keys or samsung/zeroflteuc/zerofleatt:6.0.1/MMN29K/G920AYS5DPK3:user/release-keys

    But this device has

    what can i do ?

  15. Hi, i have the G925A with a baseband version of G925AUCU4DPH5, Which baseband do i have to install? Can i install any of those?

  16. HI, I’m stuck in the adb sideload process. When in cmd and after giving the command adb devices, it is not showing any devices or character strings. What should I do to continue the sideload process?

  17. The link to the full firmware for SM920A is broken. Is there a link to a mirror sit? Also, which version of ODIN should be used?
    Thank you

  18. Hi i made everything , but after phone restart it stucks on att blue screen what can i do ??

  19. Hi I’m confuse can somebody help me please?

    The thing is I have a G920A AT&T with the baseband version (G920AUCU3CPD5 Android 6.0.1) and I really would like to know if I have to install first G920AUCS6DQC1 directly with Odin even though is not the same baseband and then from G920AUCS6DQC1 to U6EQCF Nougat update OTA zip with ADB, and sorry I’m new to all of this and thank you.

  20. I tried to update Nougat by using Odin for my SM-G920A.
    I followed the instruction, flahed the firmware, and everything worked well. Odin said it was successfull, yet my Android remains 6.0.1. I don’t know what the problem is. Will try the OTA one later …

  21. hello I downloaded the “G920AUCS6DQC1- Full-ODIN-firmware” and updated but still its 6.0.1 on my phone ???

  22. Hello from Bulgaria! I’m with SG-G925A and I do all steps with Odin and all worked perfect. Now I’m on adb mode and waiting from maybe 30-40 minutes… my phone shows Unpacking new files… and on the command window shows that the process is on 96%, but it is 96% for more than 20 minutes… Is it normal? I mean is it takes too much time or its fine? Thanks!

  23. G920AUCS6DQC1-to-U6EQCF is not like the other files, it won’t let sideload it.

  24. found the issue, its not “removing” the rar extension, but extracting it, the valid md5 files are in the rar.
    do it for all files.

  25. PK3 to QB8 is an OTA zip file. Odin detects only .tar or .tar.md5 files.

    OTAs must be installed using ADB sideloading method described in the tutorial.

  26. I mean that after installing the firmware successfully you have to flash or install that Nougat OTA zip file via ADB Side-loading. You can find the instructions for that same above.

  27. Hi,

    What do you mean by “flag the Nougat OTA”, assuming the firmware installation ended successfully, so I need to do it, is it the adb sideloading section, doe it going to wipe my data?


  28. Hi Oren, “flag” is a typo. I actually meant flash or install. First of all, Install the QC1 firmware that is the latest Marshmallow release for the device. After that you need to install the QC1-QCF OTA zip file as described in the guide.

    Flashing the OTA through ADB will wipe your phone’s data so don’t forget to backup your device first.

  29. My baseband is G25A. I already try a couple of times the both ways and it didn’t work. The method of Odin stays on “File Analysis” and the adb sideload method print the message “Total xfer: 1.15x”.

  30. My baseband version is G920AUCS5DPK3. What file/files do i need to download to get my S6 on Nougat?

  31. Nothing yet. I’m from Argentina, my english is not so good and I don’t understand the istructions 100%. I mean that I get lost trying to understand.

  32. Hi, my baseband is G925AUCS4CPG1. All I´ve got to do is install the 4 files via odin and that’s all? Thanks Rakesh!

  33. Hi Rakesh! Update complete, thank you! Anyway, just wondering Android version is still 6.0.1. is it normal? Though the system already change.

  34. Hello Rakesh i install this but I’am again in 6.0.1 ne Baseband change in G920AUCS6DQC1. Now how to get Nougat. can you send me a download link for Nougat firmware

  35. Hi Rakesh. How if my Baseband version is G920AUCU3CPD6? Can I still be able to upgrade it?

  36. You can try that but you would need an USB OTG for that. It would be better if you start from the scratch. I mean re-flash the PK5 firmware in Odin followed by the OTA update zip via recovery.

  37. Can I try reinstalling it through apply update from sd card’? Through placing the zip file in storage?

  38. I have a working internet, tried both wifi and data but its stil same, even tried factory reset, Also tried without sim.

  39. I have successfully done everything but the setup wizard is not finishing after the last ‘Just a sec’ screen. Any help will appreciated.Thanks

  40. What one do I install if I have At&T S6 edge with baseband G925AUCS6DQC1? Plz help.

  41. Yes, But thanks brother….the problem is solved now….what I sorted out is that the issue is not with the update packages….rather its an ADB server support issue….the platform tools you provided in the link does not support either bootloader version 6 or the android 7 version itself….so I tried the minimal ADB fastboot. And it went with success! The same issue is with the S6 edge plus at&t another guy is experiencing on another forum on Droidview…better help him out also….

  42. yes it is fully stock, and the device status is official, no system apps were disabled since i factory restored the device before operation. All previous links for android marshmallow update went successful until this large update firmware was attempted. ADB stopped responding to work and the error was generated. I tried it on a different system with different OS. Same error.

  43. Your “Getting Prepared” steps says: Make sure you have inserted an external micro SD card into your phone.
    But Galaxy S6 does not take external SD card. How do I install the OTA for Galaxy S6?

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