N900AUCUEOC1 Lollipop OTA Update AT&T Galaxy Note 3 SM-N900A Stock ROM

Here’s the  stock Android 5.0 Lollipop build version N900AUCUEOC1 for AT&T Galaxy Note 3 SM-N900A. The N900AUCUEOC1 is the first official Lollipop update and was rolled out via OTA update. The latter is technically an upgrade to the last of the Android 4.4.4 KitKat released build version N900AUCUDNL1. It comes with a handful of new features, like the new User Interface design, Battery saving features, System stability improvements and many more  (read the changelog).

This N900AUCUEOC1 stock flashable package is only for those advanced users that might need to restore and return back their modified Galaxy Note 3 SM-N900A devices to a 100% stock official Android 5.0 Lollipop firmware. So to be able to do that, one might need the N900AUCUEOC1 stock ROM which has been useful to completely unroot, and removed any modification from the device.

Technical Details of N900AUCUEOC1

N900AUCUEOC1 OTA Update Lollipop

Device: Samsung Galaxy Note 3
Model number: Samsung SM-N900A
Android version: 5.0 (Lollipop OS)
Baseband version: N900AUCUEOC1
Kernel version: 3.4.0-4335446
Build number: LRX21V.N900AUCUEOC1
other info:
AP: N900AUCUEOC1
CSC: N900AATTEOC1
CP:  N900AUCUEOC1
Release date:  March 24, 2015

The N900AUCUEOC1 stock ROM below was  pulled during the released of the official OTA update in March but was just being repacked it into a flashable file. It remained untouched and stays official at is was like the ones released via OTA update.

Disclaimer: This method is used by Android developers and advanced users only. If ever this is your first time heard about this procedure, please make a careful research first before proceeding. We shall not be held any responsibility if anything happens to your device upon using this guide. Proceed at your own risk!

Warning! This stock ROM is only compatible for Galaxy Note 3  with SM-N900A (AT&T) specific model only. Do not ever try to use this firmware to other US Samsung Galaxy Note 3 variants.

Download the original N900AUCUEOC1 Stock ROM/Firmware:

N900AUCUEOC1 OTA Update zip, flashable in Stock recovery :
N900AUCUEOC1_N900AATTEOC1_Stock_OTA.zip (link)

Important Note: You may only install the N900AUCUEOC1 OTA update zip in stock recovery  on-top of Android 4.4.4 KitKat N900AUCUDNL1. Due to the software consistency check-up upon installation. It may failed if the device is still running in modified, rooted and older build versions.

Follow this guide here: Install N900AUCUDNL1 4.4.4 KitKat stock firmware

N900AUCUEOC1 Odin packages: 

Full single tarball – N900AUCUEOC1_N900AATTEOC1_N900AUCUEOC1_HOME.tar (link)

Individual N900AUCUEOC1 stock firmware consists of Boot (BL), Phone (AP), Modem (CP) and CSC packages.
BL_N900AUCUEOC1_…_user_low_ship.tar
AP_N900AUCUEOC1_…_user_low_ship.tar
CP_N900AUCUEOC1_…_user_low_ship.tar
CSC_ATT_N900AATTEOC1_…_user_low_ship.tar

Prerequisites:

Before you proceed prepare these necessary things as follows so you will not screw-up your phone:

• Create a back-up all your personal data, like: Contacts, Messages, Applications, Pictures and Videos, so that you will not lost it just in-case something might went wrong after the update.
• Make sure that your Galaxy Note 3 battery is fully charged to ensure stability and to get rid pf power failure issues while updating.
• Close all softwares, such as KIES suite, Antivirus, firewalls, to prevent the possible conflict.
• Prepare a personal computer or laptop with Windows OS.
• Enable USB debugging mode if you are having issues connecting your device to the computer try to enable the this option. In your Samsung Galaxy Note 3, go to Settings>> About device>> then look for the firmware “Build number” and then tap that build number for around 7-times. Then hit back to Settings>> Developer option>> Enable USB.
• TURN OFF the Reactivation Lock – Got 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.

The Procedures:

Stock Recovery Installation: 

1) Make sure your Galaxy Note 3 SM-N900A is running in a 100% N900AUCUDNL1 4.4.4 KitKat, so you’ll still have the needed stock recovery.

2) Copy the N900AUCUEOC1_N900AATTEOC1_Stock_OTA.zip into the SD card.

3) reboot the device in recovery mode: Turn the Power Off .  Then press and hold the Volume Up, HOME and Power ON button at the same time. You will then presented into a recovery mode screen. Toggle down to “Apply Update from SD card” option using the volume keys then locate the file in the SD card.

4) Hit “Install” then wait until it finishes.

5) Perform a full factory reset if necessary. This optional if you just want to regain a fresher firmware installation and to get rid of lag issue. But make sure to create a back-up of all of your important data first before doing so.

Odin Installation:

Odin downloader – look for Odin3_v3.09 here
USB Driver – drivers are here (only needed if you haven’t installed Kies)

1) Download the firmware packages and ensure that you have installed the USB drivers first.
2) Run Odin3_v3.09 flasher program. DO NOT touch the default options such as check-marked boxes “Auto-Reboot” and “F-Reset Time” while leaving the “Re-Partition” unchecked.

3) Reboot the Galaxy Note 3 into Download Mode: Turn it Off first. Then press and hold the Volume Down, HOME and Power ON button at the same time). You will then presented into a “Warning Message” screen, just press the Volume Up to continue. Once the Android robot and a “Downloading” message appears.

4) Connect the USB data cable from Phone to PC. The ID:COM box will turn to a bluish color when the phone is properly connected and recognized with Odin.

5) Load the stock firmware on each designated slots.

For single-packed stock firmware only:  Just click on the AP button then select and load the single NC2 stock firmware packed.

AP: ‘N900AUCUEOC1_N900AATTEOC1_N900AUCUEOC1_HOME.tar.md5′.

For loading the individual packages: Select carefully each specific files to each designated slots in Odin such as BL, AP, CP and CSC files as it will fail if you choose the wrong ones while flashing.

BL button:
‘BL_N900AUCUEOC1_…_user_low_ship_MULTI_CERT.tar.md5′
AP button:
‘AP_N900AUCUEOC1_…_user_low_ship_MULTI_CERT.tar.md5′
CP button:
‘CP_N900AUCUEOC1_…_user_low_ship_MULTI_CERT.tar.md5′
CSC button:
‘CSC_ATT_N900AUCUEOC1_…_user_low_ship_MULTI_CERT.tar.md5′

6) Lastly, tick the ‘START’ button when all is set and ready to begin flashing.

Do not disconnect nor do anything when the phone is already in flash mode. You’ll messed up the phone if you accidentally interfere the installation. Wait until a word “PASS” appears on the left side of the Odin screen, it is an indication that the installation successfully completes. (If you get failed errors, check the USB connection condition, repeat the whole process)
Wait until the phone completely reboots, then unplug it from PC.

Do full wipe data factory reset again just right after flashing. This is only optional just in-case you’ll want to get rid of lag issues after flashing. Press and hold Volume Up+ Home+Power button, then select the Wipe Data/Factory Reset, to gain a fresh firmware installed.

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