How to Unbrick AT&T Galaxy Note 3 SM-N900A

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unbrick-at&t-galaxy-note-3

It’s said that it is only through rooting an Android device that we can make the most out of it. There are hundreds of good root apps that can help you customize your device and improve its performance. The wish to get the best of the device we own often prompts us to involve us in activities like rooting  the device and installing a custom recovery on it.

Indeed, having a rooted smartphones has its own advantages but it also involves risk of various natures. While in most cases, the procedure of gaining root access goes successful, there are still chances that you might find your device caught in a bootloop. Sometimes, trying to install a custom recovery on a device with secured bootloader bricks the device and it refuses to turn on.

In many cases, the device keeps showing the boot/splash screen but the users are able to boot the device in Download Mode. If you can access Download Mode on your Samsung Galaxy device, it simply means that it is soft-bricked and there are still chances that you can revive it.

Today, we shall see how to unbrick AT&T Galaxy Note 3 SM-N900A from a soft-bricked state. Please note that to be able to use the method described below, you must be able to boot your Note 3 into the Download Mode. If you want to downgrade your AT&T Note 3, you can do it too but in that case, you will have to leave the Bootloader box (shown as BL in Odin) blank. Since the AT&T Note 3 comes with secure bootloader, it does not let flashing a lesser version that your device has.

Getting Prepared

Before we proceed to install the stock firmware on the AT&T Galaxy Note 3, here are a  few preparatory steps that you need to make:

Please note that after extracting the firmware zip file from above, you’ll find many files. Normally, Samsung firmwares come in singles with .tar.md5 extension. The firmwares provided on this page are multi-file because different components of the firmware have been separated. Inside each of the zip files, you will find the following components:

  • AP = Android Platform
  • BL = Bootloader
  • CP = Modem (radio)
  • CSC = Region & Network operator
  • PIT = Partition table

at&t-note-3-firmware

Unbrick AT&T Galaxy Note 3

If you have downloaded the firmware file for your AT&T Galaxy Note 3 and have already installed the Samsung USB Drivers on your computer, let’s now do the real action, but carefully!

  1. Boot your Note 3 into Download Mode. You can do so by turning off the device and then pressing the Volume Down + Power buttons together for 2-3 seconds. When you see the warning screen, press Volume Up to enter Download Mode.
  2. Connect your phone to computer via USB cable.
  3. Go to Odin folder and launch the program. Wait till your device is detected by Odin and the ID:COM port turns blue and you see “Added!!” message on it.
  4. Now click on BL/Bootloader button and select the file in firmware that begins with BL. Leave this field blank if the firmware build version you are going to install is lesser than the one present of your AT&T Note 3.
  5. Click AP/PDA button and select the file with AP in its name.
  6. Then click the CP/Phone button and select the file beginning with CP.
  7. Click CSC and select the file with CSC in its name.
  8. Then click PIT and select the .pit extension.
  9. Auto Reboot and F.Reset Time options are checked by default in Odin. Make sure that they are selected.
  10. Since we are using the PIT file here, you’ll have to select Re-Partition option too.
  11. Finally, click the start button and wait till the firmware is installed on your device.
  12. Unbrick-ATT-Galaxy-Note-3-Odin
  13. You will see RESET/PASS ! message and you phone will reboot automatically.

Wait till your Note 3 boots up. Done!

Gettings a Bootloop?

In case your AT&T Note 3 refuses to boot normally and it hangs on the Samsung logo bootanimation, here’s how you can fix the bootloop:

  1. Remove your phone’s battery, wait for 30 seconds and reinsert it back to its place.
  2. Now boot the device in Recovery Mode. Press and hold the Volume Up + Home + Power buttons together till the screen turns up and the Samsung logo blinks for two times. Release the Power button but keep the other two keys pressed till you see the recovery screen.
  3. Having entered the Recovery mode, scroll down to “wipe data/factory reset” option and select “yes” to confirm your choice.
  4. Then “wipe cache partition”.
  5. Finally, select “reboot system now”.

With the hope that this tutorial would have proved helpful to you in recovering in soft-bricked AT&T Note 3 SM-N900A, we put our guide to en end here. Please do not forget to your feedback or doubts via comments below. Cheers!

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  • http://www.droidviews.com/ Rakesh

    Glad to know! :-) Thanks for sharing your feedback!

  • Daniel Marmol

    I have an AT&T sm-n900a. I tried to root it, but the process doesn’t finish and the phone don’t up any more. I’ve follow the steps and my phone it’s alive again. I’m very happy for this. Thank you a lot. You are the best.

  • http://www.droidviews.com/ Rakesh

    No.

  • catwoman3000

    will this blow away my region lock? thank u

  • Carlos Prado

    I need help I have an sm-n900a and it was on 4.4.2 kitkat and I tried flashing rom and now wont boot I van get into recovery mode and download mode what would be the best way to fix my phone

  • hoang nguyen

    You cannot go back to MJ5 when on KK

  • Monster

    You don’t need to pay, it’s just an option my friend. Just go to the website from your phone, and click the red icon in the middle of the screen and it downloads directly to your phone. It’s so easy. Glad I could help.

  • Gerardo

    hell to the mo’fo yeah! it’s up and running. thnx i got it. i wasn’t able to root because the website to download that towelroot needs payment. i’m not making a payment.

    i also got a message that says, ” unathorized actions have been detected. restart your phone to undo any unathorized actions.”

  • Monster

    Ok, only works for galaxy note 3 sm-n900a and the firmware has to be n900aucunc2… kitkat… just follow the directions on this page… its free and it works perfect, fast download and everything :) let me know how you make out. it saved my phone.. http://forum.xda-developers.com/showthread.php?t=2703006

  • Monster

    ok this only works on galaxy note 3 sm-n900a and the firmware has to be n900aucucnc2… just go to this website and follow these directions. it worked perfect. share with your friends… http://forum.xda-developers.com/showthread.php?t=2703006 let me know how you made out :)

  • gerardo

    i haven’t found out how to fix it. how did u do it Monster?

  • http://www.droidviews.com/ Rakesh

    What’s the solution?

  • Monster

    Did you fix your phone yet bud? I found a solution after looking for days, I finally fixed my note 3 sm-n900a and im back to perfect. rooted,and everything.

  • Monster

    The only one that did pass was the MJ5 but it just put my phone in an endless bootloop :( any help would be lovely. I was on 4.4.2 KK

  • Monster

    I did the steps, and used the one ending in mi9, after getting about 95% it failed, and when I rebooted, I get “firmware upgrade encountered an issue. Please select recovery mode in kies & try again? any help?

  • Soham

    Hi Rakesh,
    I bought a sealed AT&T SM-N900A Note 3. It has baseband version MJ5 and i need to use it in India. It is sim lock for sure and since it is after july 2013 – i suspect it to be region locked as well.
    I have rooted the phone successfully however chainfire’s app did not work. Could you tell me what’s the best solution I have for unlocking the phone completely?
    Please advise.

  • http://www.droidviews.com/ Rakesh

    Is this happening a software update? Try doing a data factory reset from Android system recovery. You can access it by pressing and holding Volume up + Home + Power keys together for a few seconds.

  • John

    Up until 3 days ago everything worked great, now all of a sudden my phone will not connect to wifi. Any idea what happened or how I can fix it? I’m not getting an error, or just says trying to connect.

  • http://www.droidviews.com/ Rakesh

    Then find and equal or greater version of firmware to install it successfully.

  • gerardo

    4.4.2 KK

  • http://www.droidviews.com/ Rakesh

    What was the firmware version of your device?

  • gerardo

    stuck on boot loop…when i do vol up + home + power it brings up the note 3 logo and recover booting in blue at the top left corner, but it resets into the boot logo but in a loop. it doesn’t take me to recovery mode

  • http://www.droidviews.com/ Rakesh

    Right, N900AUCECMLG is the leaked KitKat firmware. The official KK is not available for download yet. as for file extension, it should be .tar.md5.

  • Kyle Diez

    I just realized that this version of kitkat is probably the bootlegged one from the past. I already had the official release on my phone before bricking. Could I just use the previous version and then re-upgrade after everything is normal again?

  • Kyle Diez

    Seems like it was recognized with no issues. However, when I download the kitkat version of the above firmwares (N900AUCECMLG) and extract the file, none of the above mentioned files that should be inside are there (AP, BL, CP…) and when I open odin and then open the N900 file within odin, none of the files show up because they have none of the correct file extensions. Thanks for your help.

  • Kyle Diez

    Thanks. I’ll try that in a bit.

  • http://www.droidviews.com/ Rakesh

    We always suggest people to keep USB debugging enabled to avoid connectivity issues in situations like this. You can try it and if the device gets recognized in Odin, you can be successful in recovering your device too.

  • Kyle Diez

    if the phone is bricked, how do you expect someone to turn on USB debugging from the settings? The phone doesn’t boot bast the carrier logo. can i do it without it?

  • IsaacAbelGonz

    Will it work like that, by flashing a 4.4 firmware on my note that has 4.3?

  • IsaacAbelGonz

    Android 4.3 with n900aucubmj5, and does this method work properly, cause people in these comments have posted about getting lots of errors?

  • http://www.droidviews.com/ Rakesh
  • http://www.droidviews.com/ Rakesh

    What does the firmware version show in Settings> About?

  • IsaacAbelGonz

    Well I’m on android 4.3, so it’s fine if i install the 4.3 mj5 that you have here?

  • http://www.droidviews.com/ Rakesh

    Yes. Just make sure not to install lesser version of firmware or you’ll mess with the bootloader.

  • IsaacAbelGonz

    Even though my phone isn’t bricked or anything?

  • http://www.droidviews.com/ Rakesh

    Yes, you can do that!

  • IsaacAbelGonz

    Hey rakesh, can i use this method to conpletely restore me phone to stock, even though its not bricked, i just want full stock to be able to update to 4.4 kit kat?

  • IsaacAbelGonz

    Yes hello, is this the way to return to complete stock, cause i want to since i rooted and removed stock apps, and i cant update the phone, so would this bring me back to full stock and be as if i just bought it?

  • ecruz5

    Even when I hold the volume down, power and home key it will still keep repeating the same message on the phone “recovery booting… set warranty bit : recovery”

  • Josh

    Great now my bootloader is broke, thanks

  • The Tech Ninja

    To those who can’t get it to work.. try using the OFFICIAL USB cable.

  • The Tech Ninja

    This works! Thanks!

  • zipper25

    I don’t know about anyone else but this doesn’t work in any configuration. Tried everything…all I get is a big fat FAIL. So what’s up with that Rakesh? How did you get this to work?

  • Ken

    Back to rooting. Then I can disable apps the use great amouts of data that I don’t use, useless bloatware. Plus 4.3 runs better the way I use the phone. Thanks

  • http://www.droidviews.com/ Rakesh

    Sorry, I missed the KitKat thing. The method described above works on 4.3. Why do want to downgrade, by the way?

  • Ken

    Is there a way to install the leaked version of MLG 4.4.2 over the OTA update of NC2 4.4.2 on At&t Samsung note 3. Trying to get back to MJ5 4.3. I don’t think that I can downgrade the new OTA NC2 4.4.2 to MJ5 4.3 because of the bootloader. that’s why I was thinking if this can be done with the leaked Kitkat then I can go back to MJ5 that way with odin 3.

  • chris

    Do I flash the bl and there’s no csc in the included package.Anyone have a link to the 4.4.2 odin one click? All the dls time out before it finishes and I’m fairly sure it could fix this.i have no google play services and I just want to return to 100% stock/official firmware

  • chris

    I’m on mj5 system status is custom but I’m not rooted and want a clean install so I can ota to 4.4.2 any help????

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  • Jesus Magana

    i did the one click 4.4.2 again and it works now. I just have to deal with reboots and force closing apps once in a while. I hope the Official 4.4.2 comes very soon. Thanx for all your help! :)

  • http://www.droidviews.com/ Rakesh

    Crap! I was afraid of that. The bootloader is broken. Anyway, install the same leaked 4.4.2 firmware and wait till the official firmware file is available for download.

  • Jesus Magana

    It wont let me go to the recovery mode

  • http://www.droidviews.com/ Rakesh
  • Jesus Magana

    I got a boot loop. Didn’t work. Now what?

  • http://www.droidviews.com/ Rakesh

    Leave that field while flashing the firmware.

  • Jesus Magana

    Why doesn’t the N900AUCUBMJ5.Zip have no CSC file in the download link?

  • http://www.droidviews.com/ Rakesh

    Do not flash the bootloader and you should be able to do it. Proceed at your own risk.

  • Jesus Magana

    Will this work if I did the the leaked 4.4.2 update? I wanna go back to 4.3

  • Jennifer Bailey

    I keep getting “fail”. I’m not sure what I’m doing wrong. I’ve tried the Kies initialization, the emergency recovery mode, and now this. I followed the directions exactly, and then unchecked the bootloader file after I saw it here in the comments, but it gets all the way to the end and then says fail. Am I doing something wrong?

  • http://www.droidviews.com/ Rakesh

    Do not flash the boot loader file.

  • http://manofsteel.info jose

    still stuck on samsung note 3 boot logo even when it all went thru smoothly …got the odin pass and all …..im so frustrated

  • Pingback: How to Install Stock Firmware on Galaxy Note 3 (All Models)

  • http://www.droidviews.com/ Rakesh

    Yeah, it surprises me too but people mostly comment when they get into problem and want help. Thanks for your comment though. :) A great start!

  • Flip Jumpman

    Awesome read!
    Why the hell aren’t there any comments?

    Thanks for the info.