T-Mobile Galaxy S5 Android 5.0 Lollipop Update G900TUVU1DOB1 Released

T-Mobile Samsung Galaxy S5 SM-G900T official Android 5.0 Lollipop update firmware build version G900TUVU1DOB1 has just started rolling out in the USA alone.   The Android 5.0 Lollipop update 'G900TUVU1DOB1' itself will bring an additional improvements to Wi-Fi calling experience, fixes the Wi-Fi calling one way audio and IPv6 email setup issues.  T-Mobile is the 3rd US carrier had to released the Lollipop update on Galaxy S5 right after  Sprint and Verizon Galaxy S5 models got their own updates few days earlier. While AT&T's Galaxy S5 is another story as they still in the pushed of the Android 4.4.4 KitKat update but might also respond very soon.

Technical Details of G900TUVU1DOB1 5.0 Lollipop:


Android version: 5.0 (Lollipop OS)
Baseband version: G900TUVU1DOB1
Kernel version: 3.4.0-4033351
Build number: LRX21T.G900TUVU1DOB1
SE for Android status: Enforcing
other info:
AP: G900TUVU1DOB1
CSC: G900TTMB1DOB1
CP: G900TUVU1DOB1
Build date: February 07, 2015
Date released: February 18, 2015


Features and Enhancements:
  • Android 5.0
  • Activates Wi-Fi calling 2.0
  • Wi-Fi calling experience
  • Resolved Wi-Fi calling one way audio
  • Resolved IPv6 email setup

In addition, the Android 5.0 Lollipop is now available via  Over-The-Air (OTA) software update and or via manual upgrade using 'KIES 3' which can be downloaded at Samsung USA's support page.  The update itself 'G900TUVU1DOB1' weighs at hefty 939.59 MB in file size.  This is an update from previous Android 4.4.4 KitKat version G900TUVU1CNK2. Below are the quick guides on how to perform a software updates on Samsung Galaxy S 5.

How to Update the Galaxy S5 SM-G900T to G900TUVU1DOB1 5.0 Lollipop


Samsung as well T-Mobile support told users to prepare the following important notes to consider before performing the software update.  I have also added some useful insights why you should follow this procedures to keep your  phone in safe.

Recharge the phone – You should make sure your device is fully recharged before performing the software update. Do not also remove the battery during the software update is in progress. A power failures may cause damaged to your device that might results as we so-called “soft-bricks”. If this happens your device may just stuck on Samsung logo or welcome screen and can’t reboot normally.

Backup important data – Even though it is not as always necessarily but if something might went wrong during the updating process your important data is kept in a safe place.  You should back-up your important files, including contacts, emails, messages, photos, videos, apps and other stuff. Like I said while during software update process is interrupted there is a possibility that your data stored from your device internal SD card may lose or deleted when a sudden unexpected failure happened and it forces you to perform a factory data reset which basically wipes your phone’s memory.

Your Galaxy S5  is not rooted – Your device should not be modified and rooted, there is a certain circumstances that a modified and rooted Galaxy S5 SM-G900T may not accept any official software update anymore or it can accept an update but it might harm your device once the update has made. Learn about the new Samsung KNOX security suite. Most known error that says ‘firmware upgrade encountered an issue, please select recovery mode in kies and try again‘ or “Your device has been modified Software update are not available” you should try to avoid that from happening.

Update to G900TUVU1DOB1 5.0 Lollipop via Over-The-Air (OTA)


This is usually how the carrier branded or locked Samsung Galaxy S5, performs a software update.  This method is Firmware Update through over the air or called as OTA update, which usually a notification message will directly sent to you from your network provider and from  Samsung. It simply notifies you that there is a new software update available to download.  If you did not receive any notification messages you can manually check fro the update instead.  Doing this you may only tap on your Galaxy S5 SM-G900T Settings>>About Device, tap Software Update.
  • Find “Software update”
  • Slide your finger down the display starting from the top edge of your mobile phone.
  • Tap the settings icon.
  • Tap About device.
  • Tap Software update.

It will automatically tells you that a new update is available or your software is up to date when there is none yet. You can simply tap install now when you want to perform an update or install later.

Update to G900TUVU1DOB1 5.0 Lollipop using Kies 3

The second method is a firmware update through Samsung Kies. You may head-over to Samsung support page http://www.samsung.com/us/kies/  and get it there,  then install it into your Windows or Mac computer. Choose the new Kies 3 which supports the Galaxy S5 SM-G900T and other Samsung devices runs with latest version of Android OS.  Once you installed Kies 3, all you need is connect your Samsung Galaxy S5 SM-G900T  to the computer using the USB cable, then simply run and follow Kies on-screen software update instructions.

Source: https://support.t-mobile.com/docs/DOC-10398