Monday, August 17, 2015

Install N910TUVU1COG2 T-Mobile Samsung Galaxy Note 4 SM-N910T, Official 5.0.1 Lollipop Stock Firmware

A stock firmware build number N910TUVU1COG2 for T-Mobile Samsung Galaxy Note 4 SM-N910T. The N910TUVU1COG2 is an Android 5.0.1 base and officially rolled out on the 10th of August. The update is primarily equipped with new Google security patches that will then provide the messaging security improvements,  also basically known (Stagefright) vulnerability fix. Those who have a rooted and modified their T-Mobile Samsung Note 4 SM-N910T, the possibility is that it will no longer receive any software updates via Over-The-Air (OTA). So just in case you might want to manually upgrade and restore the device to its official firmware. To achieve that, you will need the N910TUVU1COG2 5.0.1 Stock firmware itself as it is the only way you can update your Samsung Note 4 SM-N910T.

In addition, using a stock firmware is advanced users approach to return back the device to its original factory default settings. For those who may not know that a rooted and modified phones also lose its warranty and the privilege to get the official support from the manufacturer and the carrier provider.

Technical Details of Android 5.0.1 N910TUVU1COG2 Stock Firmware

Device: GALAXY Note 4 (SAMSUNG-SM-N910T) 
Model number: SM-N910T
Android version: 5.0.1
Baseband version: N910TUVU1COG2
Kernel version: 3.10.40-4739134 
Build number: LRX22C.N910TUVU1COG2
Build date: August 3, 2015

Feature/Enhancement of N910TUVU1COG2 update:

  • Messaging security improvements

Addressed at T-Mobile Note 4 support page.

How to Manually Restore a T-Mobile Galaxy Note 4 SM-N910T to N910TUVU1COG2 Android 5.0.1.

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 you proceed. We shall not be held any responsibility if anything happens to your device upon using this guide. Proceed at your own risk!

Frequently Asked Questions About Stock Firmware:

When do we use the stock firmware?
When it happens that you try to perform a software update then gets an error message that says The operating system on your device has been modified in an unauthorized way. Try downloading software updates using Samsung Smart Switch on your PC or visit a customer service center.

That simply means that the device could not get the software update anymore. So the best shot here is you need to remove the root image that has been installed in the device by flashing back the stock firmware itself.


Before you proceed prepare these necessary things as follows so you’ll not screwed-up your phone:

• Create a backup all your personal data, like Contacts, Messages, Applications, Pictures, and Videos, so that you will not lose it just in case something might go wrong after the update.

• Make sure that your T-Mobile Samsung Galaxy Note 4 SM-N910T battery is fully charged to ensure stability and to get rid pf power failure issues while updating.

• 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 this option. In your T-Mobile Samsung Galaxy Note 4 SM-N910T, go to Settings>> About device>> then look for the firmware build number and then tap that build number for around 7-times until a message pop-up that says something like “congratulations you are now a developer”.

• TURN OFF the Reactivation Lock – from Home screen tap on 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.

Galaxy Note 4 reactivation lock turn off

Grab these necessary tools

Odin downloader – Use Odin3_v3.10.6 for flashing the 5.0.1 stock firmware

A USB Driver – drivers are here (only needed if you haven’t installed the latest Kies 3)

Stock Firmware: Download N910TUVU1COG2 5.0.1 Stock Firmware
Important Note: This stock firmware can be use only on top of any older software updates. You should not use the stock firmware for downgrading purposes on top of any newer software updates, including but not limited to such as much higher than N910TUVU1COG2 and any latest Android 5.0.1 Lollipop updates. Doing so may result into undesirable outcome due to the new secured operating system. This specified stock firmware or so-called stock ROM is only compatible for Samsung Galaxy Note 4 SM-N910T (T-Mobile) specific model only. Do not ever try to use this firmware on other Samsung Galaxy Note 4 variants, including other brands and model numbers.

Extract/Unzip the download stock firmware

Extract the downloaded N910TUVU1COG2 firmware or stock ROM. Use WinZip, 7zip, Winrar or any decompressing program you have had in your computer.

Run and Configure Odin Flasher

Run Odin3_v3.07 flasher program. In Odin window DO NOT tick the option box that says ‘Re-Partition’. Leave ‘Auto Reboot’ and ‘F.Reset Time’ check-marked by default.

Run and Configure Odin Flasher

3) Just click on the AP button then select and load the N910TUVU1COG2 stock firmware.

It reads out like this – N910TUVU1COG2_N910TTMB1COG2_Home.tar.md5′

Once loaded you need to wait for a while as it reads out the MD5 checksum for compatibility.

Reboot the Galaxy Note 4 in Download Mode

Reboot the Samsung Galaxy Note 4 SM-N910T into Download Mode: Turn it Off first. Now 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.

Connect the Note 4 into a computer

Connect the Galaxy Note 4 to the computer using the supplied USB data cable. In Odin window, the ID: COM box will turn to a bluish color when the phone is properly connected and an indication that its recognized with Odin. It also states as “Phone Added! in the log-cat.

Begin Flashing

When all is set and ready to begin flashing; Tick the ‘START’ button located at the lower part of Odin.

Avoid Interrupting the process

DO NOT disconnect nor do anything when the phone is already in download 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 it says Pass!!

Wait until the phone completely reboots, then unplug it from the computer

Troubleshooting when firmware flashing failed

Does a factory reset after flashing is necessary when the device previously runs on any modified ROM and unofficial firmware images? This process is optional, but this method can get rid of the unwanted bootloop and lag issues after flashing. To do this;

Press and hold Volume Up+ Home+Power button, then select the Wipe Data/Factory Reset, to gain a fresh firmware installed.

If you use this for unrooting and restoring back from custom ROM but cannot get through the during the flashing and you get Odin failed error. You may just repeat the process but make sure to check everything from USB data cable, computer’s USB serial port, USB driver try the other Odin version. You may also sort out what root kernel and custom ROM and any modified system images you have previously used before as it also causes a flashing failure.

If you have something to add and or in need for assistance, just drop it on the comment form below.


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