G3815XXUBNA1 Android 4.2.2 JB Firmware For Galaxy Express 2 SM-G3815 - How To Guide

G3815XXUBNA1 Android 4.2.2 Jelly Bean Odin flashable download link available now. XXUBNA1 Android 4.2.2 Jelly Bean firmware update for Samsung Galaxy Express 2 SM-G3815 rolled out recently in various countries including Hungary and Bulgaria (complete country list available at later section). Apart from manual update using Odin tool, you can also update your device to XXUBNA1 firmware through KIES or via OTA update. The device comes with Android 4.2.2 Jelly Bean by default, hence expect only bug fixes and performance tweaks with this update. Continue reading this guide to learn how to get official stock G3815XXUBNA1 Android 4.2.2 Jelly Bean firmware running on Galaxy Express 2 SM-G3815. Nearly all possible ways to update your device to this firmware is discussed here. One thing you should note that flashing or installing official firmware restore kernel, as a result your root access will be void, in short it will unroot it.

G3815XXUBNA1 Android 4.2.2 Jelly Bean stock firmware available on both OTA and Kies update. However, if you can’t get it from there then you can always flash G3815XXUBNA1 Android 4.2.2 Jelly Bean firmware on Galaxy Express 2 SM-G3815 manually. We will discuss all available update methods. You should always try OTA or Kies method first and when both method don’t work then only try manual flashing.

Know Your Firmware

A. XXUBNA1 Android 4.2.2 Jelly Bean Available In Following Countries:

Hungary and Bulgaria.

You can always flash same firmware in various countries however, keep in mind you shouldn't attempt flashing a carrier branded firmware on other countries. For example, you can install a firmware that rolled out for Hungary in Uruguay but you can't flash Hungary (VDH) firmware when your country is Uruguay.

B. Know Your Firmware By File Name:

Each firmware file name comes with a specific pattern. For example if firmware file name is G3815XXUBNA1_G3815VDHBNA1_VDH.zip then G3815XXUBNA1 is the PDA, G3815VDHBNA1 is CSC and VDH is the country or carrier code.

C. How To Root G3815XXUBNA1 Android 4.2.2 Jelly Bean Firmware?

Rooting Guide: Root G3815XXUBNA1 Galaxy Express 2 SM-G3815 Android 4.2.2 Jelly Bean Firmware - How To

Warning: This tutorial is only for Galaxy Express 2 SM-G3815. Don’t try this guide on any other Android device. Also, we (True Android Team) are not responsible for any damage caused due to the instruction given in this page. Try this at your own risk. However, it is very unlikely that your device will be damaged if you follow all the instructions as it is which are mentioned in procedure.

Pre Requisites:

Though official firmware restore all existing data but we recommend to back up your data first before proceeding to avoid any uncomfortable situation such as bootloop fix.

1. Backup your device data. You can follow our ultimate backup guide.

2.  Make sure your device have at least 60% battery power. You can install an app like Battery Notifier BT Free on your Android device to check it easily.

3. You already have USB Driver Installed for Galaxy Express 2 SM-G3815 in your PC. [Download USB Drivers]

4. Make sure USB Debugging is enabled otherwise you won’t able to transfer file between PC and Galaxy Express 2 SM-G3815. [Guide].

How To Update Galaxy Express 2 SM-G3815 via OTA

  1. First of all make sure you have stable internet connection (Wi-Fi or data network) on your device.
  2. Now, go to Android app drawer and then select Settings.
  3. Then locate About Device and tap on it.
  4. Next select Software update from About device screen.
  5. Then tap on Update option.
  6. You should see an update, press OK to download and install. (Remember, download using 3G or network data will incur additional charges to your phone bill!)
  7. Soon your device will reboot to complete the installation process.
If you see “The latest update have already been installed” massage while checking update then your device yet to receive an OTA update. Check back within few days or jump to next procedure.

How To Update Galaxy Express 2 SM-G3815 via Kies

  1. Make sure you have stable internet connection on your computer.
  2. Now download and install Samsung Kies on your computer.
  3. Turn on your device (if it off) and then connect it to computer with USB cable.
  4. Run Samsung Kies and wait for it to detect your device.
  5. You should see a New Firmware Upgrade is available at Samsung Kies home screen.
  6. Press the Firmware Upgrade button to proceed.
  7. Follow on screen instruction and soon you will see your device running upgrade and reboot automatically. Once done, you can disconnect your device from computer.
Again! If you see “This is the latest firmware” in Samsung Kies, then your device yet to receive the latest update on Kies. Its good time to go for manual update instruction that located below.

[Note: You can install any firmware listed below despite availability in other countries, except those which comes with carrier name.]

* G3815XXUBNA1 Stock Firmware List Last Updated On February 14, 2014. 

G3815XXUBNA1 Android 4.2.2 Jelly Bean Firmware Downloads

Hungary (VDH): G3815XXUBNA1_G3815VDHBNA1_VDH.zip

Bulgaria: G3815XXUBNA1_G3815OXXBNA1_BGL.zip

[Please Note: After flashing this firmware you will lost any installed custom ROM including CM10.2, AOKP, Avatar, Beanstalk, Omni ROM, Slim ROM, Pac-Man, Paranoid Android, LiquidSmooth or Carbon.]

How To Install G3815XXUBNA1 Android 4.2.2 Jelly Bean On Galaxy Express 2 SM-G3815 Manually

  1. Download Odin v3.09.
  2. Extract Firmware zip file that you downloaded earlier from above link, you will get a .tar.md5 file and some other files (optional).
  3. Extract Odin zip file and you will get Odin3 v3.09.exe along with few other files.
  4. Power off your Android device. Wait 5-6 seconds for vibration to confirm complete switch off.
  5. Now, put the Galaxy Express 2 SM-G3815  in Download Mode by pressing and holding down the Home & Volume Down button together while pressing the Power button. A warning screen will come up; press Volume Up button to enter Download Mode.
  6. Now run Odin3 v3.09.exe (see Step 3) as an Administrator because Admin privileges is required to complete the process smoothly (only applicable Windows Vista and higher).
  7. Now connect your device to your PC using USB cable. An “Added!!” massage will appear in Odin’s message box. If you don’t get the same then you should try another USB port (try USB port located in back in your desktop PC). If that too don’t work then you should reinstall the driver. If you successfully see the “Added!!” message in Odin then you are ready to go in next step. You should also see COM port with a number in Yellow if you successfully added your device.
  8. Click the AP Button, and select that .tar.md5 file that you get in Step 2. If you are using old Odin then add the file to PDA button.
  9. In Odin window, make sure only Auto Reboot and F. Reset Time checkboxes are selected.
  10. Double check everything that we mentioned in Step 8 & Step 9 above. Now, once satisfied hit the START button to begin the flashing process.
  11. Once flashing completed, your Galaxy Express 2 SM-G3815 will restart and soon you will see a PASS message with green background in the left-most box at the very top of the Odin. You can now unplug the USB cable to disconnect your device from computer.
Congrats! You just updated your Galaxy Express 2 SM-G3815 to Android 4.2.2 Jelly Bean firmware. Go to Settings > About device to verify this firmware update.

Fix Boot Loop Issue On Galaxy Express 2 SM-G3815

If Galaxy Express 2 SM-G3815 stuck at booting animation for more than 10 minutes after Step 11 then follow below instructions:
  1. Go to recovery mode. To do so, press and hold the Volume Up, Home and Power buttons together.
  2. Now perform Wipe data/Factory Reset and Wipe Cache Partition task before selecting reboot system now function. In recovery mode use Volume keys to navigate between options and Power key to select the option.
Please note, performing wiping task will erase your device internal memory data and not external SD card data.

That’s it! Let us know about your latest Android 4.2.2 Jelly Bean experience.