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The AT&T variant of the Samsung Galaxy Note 5 SM-N920A is now being updated to Marshmallow firmware with a new firmware build number N920AUCU2BPE6. According to the AT&T support page, this is still the Android 6.0 version and not the latest Android 6.0.1 Marshmallow firmware. However, as reported by some of the users at XDA, this is the latest Android 6.0.1 Marshmallow Touchwiz firmware from Samsung as the previous PE5 is v6.0.1. Moreover, this is based on the newer MMB29K AOSP source that Google released not so long ago. Hence, the update may still some up with features like Doze Mode, App Permissions, etc. No matter what version of Marshmallow it is, this is a geat news that the AT&T Note 5 variant is finally being upgraded.

As we know, the full firmware file for AT&T variants is not easily obtainable. However, thanks to the contributors and Android community, the Android 6.0.1 N920AUCU2BPE6 OTA updates are now available that can be flashed using the usual ADB sideload method that most of the Android devices are capable of. So no matter which firmware you run, be it Android 5.1 Lollipop based N920AUCU2APB2 or the  earlier N920AUCU2APB2, you can still take your precious Note 5 to the latest on. To be sure, you can check out our successful tutorial for AT&T Galaxy S6 and S6 Edge devices which use similar methods to update. Firmware information:

  • Android version: 6.0.1
  • Baseband version: N920AUCU2BPE6
  • Kernel Version: 3.10.61-7563702 [email protected] #1 Thu May 19 19:01:41 KST 2016
  • Build Number: MMB29K.N920AUCU2BPE6
  • File size: PB2  > PE6 = 1350MB, PE3  > PE6 = 1370MB

Download AT&T Galaxy Note 5 N920A Marshmallow Firmware

Files To Upgrade to N920AUCU2BPE6 on AT&T Galaxy Note 5 SM-N920A From ATT Servers

More Builds: 

Marshmallow Running on AT&T Note 5 N920A

Note: The files above are OTA updates. Hence, you need to flash the updates via ADB sideload from the procedure method listed below. You have to update your firmware gradually meaning, first check your build and then flash the proper file. If you are on OI6 firmware flash the PB2 via Odin and then move forward to PB6 by flashing the N920AUCU2APB2 to N920AUCU2BPE6. If your device is running PE3 then flash N920AUCS2APE3 to N920AUCU2BPE6. This is an unofficial method. Hence, you should be cautious about it. Reader’s discretion is advised.

Also, If you’re having problems with ADB reading the 6.0.1 update, first try launching ADB from wherever it is installed, type “adb kill-server” then “adb start-server,” then “adb devices” to confirm you see your device (it should say sideload beside it if it is ready for the update). Then, type “adb sideload ” and simply DRAG the ota.zip file from wherever you downloaded it to the CMD window. It should complete the command so that it is “adb sideload ota.zip”. No press enter and give it half an hour to complete or so.

How to Install Marshmallow N920AUCU2BPE6 Firmware on AT&T Galaxy Note 5 N920A?

This procedure will flash the firmware using the usual ADB sideload method on the AT&T Note 5 device. It will wipe your data and apps. So make sure you backup everything on your PC like Contacts, Messages, Applications, pictures, and videos. Go through the prerequisites and then proceed with the instructions from below.


1. Verify your device for compatibility. The Marshmallow ROM is compatible with the listed AT&T Note 5 only.

2. Enable USB Debugging on your device. To do so, go to Settings>About Phone> Tap on the Build Number several times until you get a new Developer Options in the Settings. Open Developer Options and enable USB Debugging from there. Trust the connection by allowing it when you connect it to your PC for the first time.

3. Make sure you have latest device drivers setup on your PC for a better connection. Get it from the official page of your device manufacturer.

4. For ADB and Fastboot download the quick ADB and Fastboot Installer from here for Windows PC or get the easy installer tool for iOS, Linux, and Chrome OS. You may also like Universal ADB drivers, Naked ADB drivers.

5. Make sure your device is on the latest official Android 5.1.1 Lollipop firmware from Samsung with build number PB2 or PE3. Download the PB2 Odin firmware and flash via this tutorial. If not then download and install each version serially like v1, v2, v3, and v4.

6. TURN OFF the Reactivation Lock – Go to Settings > Security > Reactivation Lock and then uncheck the Turn Reactivation lock on. This is only needed if you already turned-it-ON, from which you cannot modify the system when it’s turned-ON.

Installation Instructions

Step 1: Download the Firmware or OTA file for your Android device. You don’t need to extract the file, just place the file on your PC where you can easily locate it.

Step 2: Make sure that you setup ADB and Fastboot on your PC. Trust the connection by checking “Always allow from this computer” when you plug in the Android device to your PC for the first time.

Step 3: Now keep the device plugged in and open a command prompt or terminal on your PC. To do so, hold the shift key on the keyboard and right-click on an empty space and select “Open command window here” option to launch a cmd window. Or simply click the address bar and type ‘cmd’.

Step 4: Boot your Android device into the bootloader or Fastboot mode. To do so, issue the following command through cmd or terminal.

adb reboot-bootloader

Alternatively, You can also manually boot into the recovery mode by turning your device completely off and the press and hold Volume Down + Power + Home at the same time for a few seconds. Also, to check your connectivity, issue the command “adb devices” before the reboot-bootloader command.

Step 5: Once you enter recovery, select “Apply Update from ADB”.

Step 6: Now, navigate to the location where you have placed the firmware file on your PC. While the folder with the SS-N920AUCS2APE3-to-U2BPE6-UP file is open (Assuming your device runs on PE3), flash the OTA by issuing the following command. (Note that you type the exact name with its proper extension. You can also rename the file for convenience.)

adb sideload SS-N920AUCS2APE3-to-U2BPE6-UP.zip

Step 9: Now the firmware file will start upgrading your device.

download SS-N920AUCS2APE3-to-U2BPE6-UP ota

Once the installation completes, you can now enjoy your new firmware. Alternatively, while, on Mac OS, you can issue “./adb sideload <firmware file name>” command or on Linux type “sudo adb sideload <firmware file name.extension>” to flash the OTA.

Step 7: Once done, reboot the device into system either manually or using the command:

fastboot reboot

Once you see the new boot logo, that means the system has successfully been installed. First boot may take a while, so be patient. If anything goes wrong, then download the OJ7 full firmware file and flash it. It will restore your device to stock. If necessary, you may need to unlock the bootloader on your Samsung device if the method fails.

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  • Chip Grant

    I have note 5 sm-n920a with 2a0j1 official firmware can I still get Ota to marshmallow that is rolling out now or do I need to be on firmware u2apb2 to be able to get the Ota update from at&t? I would think 8 days I should of been able to get the Ota but no such luck! Any input would be helpful

  • Solly Pigawahi

    thx guys, i’m on marshmallow now.. your site was very very helpful, i download every stuffs from here, i learn the tutorial from here.. and now.. for almost a week, marshmallowed… i’m not a tech kinda guy like you guys, so.. thank you very much…

  • Solly Pigawahi

    guys.. could you post the latest security update (PBG1)?

  • Stan

    Well, I am in Europe and for some reason I cannot download the Android updates from the above links.
    I am always greeted with the browser message “Error 403 Forbidden You don’t have permission to access the file on this server.”

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