Root T-Mobile Galaxy S5 running VoLTE update (G900TUVU1BNF6), without tripping KNOX

T-Mobile recently has expanded its VoLTE coverage in the United States, as result, several TMo smartphones get the software update, mainly to enable VoLTE feature. One of the flagship phone that getting an update is the T-Mobile Samsung Galaxy S5 (SM-G900T), the G900TUVU1BNF6 version is only a minor update which turns on the VoLTE capabilities of the device. Although it’s a small update, this could make rooted users got a headache, since the root will be lost after successfully updated to NF6 software.

 

The T-Mobile VoLTE was first released in Seattle, as time passes the VoLTE markets expanded to 14 other cities in the U.S., such as Atlanta, Austin, Chicago, Dallas, Houston, Long Island, Los Angeles, Minneapolis, New England , New Jersey, New York, Philadelphia, Washington DC and San Francisco. With TMo VoLTE (Voice over LTE) we can a make or receive phone calls on TMo’s fast 4G LTE network.

Many Samsung Galaxy S5 owner will be pleased with the release of the G900TUVU1BNF6 update, however, not for rooted users, as KNOX-Free root method – TowelRoot – could not run properly on NF6 software. Fortunately, there’s another root method for the T-Mobile Galaxy S5 running VoLTE updates, of course, without tripping the counter KNOX or it’s still show 0x0 in the download mode.

Requirements
  • TMo Samsung Galaxy S5 running NF6 or NE6 software version.
  • A G900TUVU1ANE6 and G900TUVU1BNF6 stock firmware for SM-G900T.
  • The Samsung’s Flash tools, called Odin3.
  • Samsung USB drivers for mobile devices.
  • Mobile ODIN Pro by Chainfire from Google Play Store.
  • TowelRoot app by geohot.
tmobile galaxy s5 nf6 root volte

Image: Samsung

Downgrade to NE6 software version

This is necessary if you already upgraded to NF6 software, but if you’re still running NE6, you can skip this section, then run the towelroot app to gain superuser privileges.

  1. Extract the Odin3 packaged in zip, you can use the v3.07 since it widely used, however, you can try the previous version too.
  2. Unzip the G900TUVU1ANE6 stock firmware, you only need the ‘*.tar.md5’ file inside the package.
  3. Run Odin3 from your computer, and check out the ‘Option’ section, ensure only ‘Auto Reboot’ and ‘F. Reset Time’ are checked, let the other untouched.
  4. Click the ‘PDA’ button, then point to where you save the NE6 stock firmware.
  5. Put your phone into download mode, connect it to your computer.
  6. Now hit the ‘Start’ button on Odin3.
  7. Once downgraded ti NE6, root your phone with TowelRoot.

Update T-Mobile Galaxy S5 to G900TUVU1BNF6 while keeping root

 
Before performing the following guide to make sure you are running NE6 device firmware and rooted.

  1. Unzip the NF6 stock firmware and get the ‘*.tar.md5’ file.
  2. Move the ‘*.tar.md5’ file to your SDcard.
  3. Open Mobile ODIN Pro app from your phone, it will ask for root permission, just grant it.
  4. Scroll down and find an ‘Open file…’ option, then point to where you save the NF6 stock firmware.
  5. You’ll be offered with the partition list of stock NF6 firmware file, just click ‘OK’.
  6. Keep all partitions as-is, but ensure to check the ‘Enable EverRoot’ and ‘Inject Superuser (SuperSU)’ options.
  7. Optionally, you might also need to check the ‘Wipe Dalvik cache’.
  8. When you’re ready, just tap ‘Flash firmware’ button to start flashing, the phone will be restart on its own when flashing done.
  9. Once fully boots up, your T-Mobile Galaxy S5 will run G900TUVU1BNF6 and rooted with SuperSU.

 

Source:xda
Filled Under:Root and Unlock
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3 Responses

  1. Gaz
    July 4, 2014 at 3:32 AMReply

    I have a T-Mobile SM-G900T from USA but it is unlocked as I am in Europe, if I change the firmware to stock will it remove the t-Mobile branding and will it still be unlocked to all networks?

  2. Danial
    September 8, 2014 at 10:16 AMReply

    Can anybody confirm this does not trip knox? Even the updating to latest version part?

  3. Steve N
    October 4, 2014 at 9:33 AMReply

    Downgrading would remove VoLTE calling, why do that?

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