Thursday, March 19, 2015

Install G900FXXU1POBK EE Galaxy S5 Official 5.0 Lollipop Stock ROM

Stock ROM G900FXXU1POBK an Official 5.0 Lollipop Update on EE's network Galaxy S5 on in United Kingdom. The latter's build number has a quite  strangely different label and it can tell that there is something special added onto it which is not commonly available compare to those previous Lollipop updates like the BOB7 and the BNL9.  But then again, noting that the G900FXXU1POBK is carrier branded firmware build and is exclusive with the said network.

Since this stock ROM has been around few days earlier, so I have a little bit time to check it for myself since I have been skeptical on a carrier branded firmware. And out my own findings within 3 days, I can tell that this is a stable Lollipop firmware build compared to G900FXXU1BOB7 which is less of issues like FC's and battery draining problem. But don't marked my word on it, just try it. So if you got a Galaxy S5 and but you may restore back to purely stock right now then grab the stock G900FXXU1POBK below.

Technical Details of G900FXXU1POBK 5.0 Lollipop:



Device: Samsung Galaxy S5 (Snapdragon)
Model number: SM-G900F

Android version: 5.0 (Lollipop OS)
Baseband version: G900FXXU1POBE
Kernel version: 3.4.0-4273884
Build number: LRX21T.G900FXXU1POBK
SE for Android status Enforcing
other info:
Build date: February 26, 2015
Release date: March 17, 2015

Again, the Samsung Galaxy S5 SM-G900F Android 5.0 Lollipop G900FXXU1POBK update can be downloaded via Over-The-Air (OTA) update and Samsung Kies. Below are the official firmware build G900FXXU1POBK Android 5.0 Lollipop for advanced users.


First thing first, you cannot directly flash the G900FXXU1POBK on top of G900FXXU1BOB7 stock.  For whatever reason it will just failed in Odin. You must have your device restored or runs in 5.0 G900FXXU1BNL9. You can grab the G900FXXU1BNL9 files below. 

Will this trip KNOX warranty void flag counter to 0×1?

Nup, this is an official and signed firmware from Samsung, so flashing official firmware will not trip KNOX.

My Samsung Galaxy S5 SM-G900F is rooted, will I lose root?

If your device is currently rooted you will lose root after flash, but you can still root it again if you want.
Disclaimer: Use of this method is solely at your own risk! Please proceed with precautions, for we will not take any responsibility if anything happens to your device by using this guide.

  • Make sure that your Samsung Galaxy S5 SM-G900F is fully charge.Stock Firmware packages comes in two formats the ‘Full-Wipe’ (delete your stored data after flashing) and the ‘Non-Wipe’ (it does no’t delete your phone’s stored data) but it is highly recommended to make a back up all important files stored from your phone’s internal memory – contacts, messages, etc. before flashing no-matter if it is Full-Wipe or Non-Wipe, just to be safe and ensure that your stored data are in safe if something went wrong during the flashing process.

  • Once you have made a back-up perform Full Wipe Data/Factory Reset. (see guide below)

  • Use a PC or laptop that runs in Windows OS, with a good and perfectly working USB serial port. Odin will not work on MAC OS.

  • Use the supplied USB cable for your Samsung Galaxy S5 SM-G900F. Enable USB debugging from your phone’s settings – Settings>>About Phone>> then scroll down to the build number and tap that number for around 7-times ’til the Developer option appear.

  • 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.

  • Ensure that KIES is closed and not running in the system tray! Kies and Odin are both created by Samsung but Kies will interrupt and doesn’t like Odin, it will block you from flashing.

Download the G900FXXU1POBK 5.0 Lollipop firmware:

Everything Everywhere UK: 
5.0 G900FXXU1POBK (link)
5.0 G900FXXU1BNL9 (link)

The Tools:
Odin3.v3.09 (find here) and the USB Driver (find here)

Install the USB driver

Install the USB Driver first to get rid of flashing failures. You may also need to extract thedownloaded file which is packed in zip or rar files, so that you’ll get the tar.md5 file.

Run and Configure Odin

Run Odin downloader Odin3_v3.09 on your PC desktop. Watch out the check-boxes options on the right top of Odin, ensure that the ‘Phone Bootloader Update’ (only if your device runs on 4.3) , ‘AUTO-REBOOT’ and ‘F.RESET TIME’ checkboxes must be checked. Only the ‘RE-PARTITION’ is unchecked.

Reboot your Samsung Galaxy S5 SM-G900F into Download Mode

To reboot the Samsung Galaxy S5 SM-G900F into download mode , you need to turn the power off. After it completely shut off, just press and hold the Volume Down key, Home button and the Power ON/OFF button simultaneously.

You should then prompted into a warning screen and asking you to press volume up if you want to continue or volume down to cancel, just simply press volume up to get into download mode. he download mode then displays an Android robot and say’s “Downloading.. Do not turn off target!!”

Connect your Phone to PC or Laptop

Once you already reboot the phone in download mode, simply connect the phone to your PC or laptop USB.

In Odin window – the ID:COM box will turn to blue color and indicates the COM port number and a message says “Added” on a logcat box will prompt you that the device is already detected or recognized by Odin. Your COM port number might be different from mine. If you do not see a COM port number then there’s something missing or wrong. You may read again from the top of this post.

Load the stock G900FXXU1POBK Android 5.0 Lollipop firmware file

Ensure that you have your device runs on BNL9, grab it from the link above and install it first before the POBK or else you will get Odin failed.  The stock firmware is pack in a single .tar.md5 file only. Now, you need to just simply click on the AP button, then browse to the folder where the file you have previously extracted and then select and load it.

Start Flashing the stock firmware

Once if all set and ready to fire-up, hit the “START” button in Odin to begin flashing the stock ROM.

Do not ever interrupt the phone while already in flashing progress, like disconnecting the cable or turning off the device. Just wait until it completely finish.

Wait until you see the PASS!! message

When the Stock Firmware installation successfully completes, you will then see a word “PASS” in Odin. This indicates that the flashing was already finish, and on the log box it says “All threads completed (succeed 1 / failed 0)”. The phone will just then automatically reboot, then it’s about time to remove it from PC or laptop USB connection.

How to get rid of lag issues and achieved a more stable Android 5.0 on your Galaxy S5

Some folks might miss this part, then there goes this lag problem here and there. This will also affects the battery life performance. So it is much better to perform a full wipe and factory reset once before and after flashing a stock firmware. This will not just avoid getting into any issues, but you can can also achieved a cleaner and fresher firmware installation.  Just do make sure you all important data has a back-up copy and already saved in safe place before doing this.

Performing Full Wipe Data/Factory Reset on Samsung Galaxy S5 

Boot in recovery mode

1. Press and hold Volume Up, Home and Power button.

2. Use volume keys to select, Up and Down and Power or Home key to select the option

3. Select Wipe Data/Factory Reset using the Home button.

4. Next select the Wipe Cache Partition

5. Lastly, select Reboot System Now to reboot your Samsung Galaxy S5 SM-G900F in Normal mode.

That’s it!


  1. Thanks for this article!

    I was wondering. I have a non EE branded S5 (SM-G900F) connected to the EE network with G900FXXU1BOC7 , which means I cannot use EE's WifiCalling feature. Can I flash G900FXXU1BNL9 and then G900FXXU1POBK as you have described, will it work?

  2. This did NOT work Wilma!

    Flashing failed with the "Volume size is too big" error, when searching for ways around this I came across threads on here that you have previously posted on, therefore knowing that there is an issue with Branded Firmwares being larger and requiring a different partition size than the regular unbranded firmware.

    Could have saved me a lot of hassle, but now i have to find my original firmware, download it, flash, and hope that this hasn't bricked my phone in the meantime. Going to be a long night....