Currently Samsung has released an official update to TMo Galaxy S4 with M919UVUFNH7 software that brings the Android version 4.4.4, which is the latest build of KitKat at the moment. The T-Mobile users seem to be lucky because from all the Samsung Galaxy S4 variants, the SGH-M919 is the first to get it. But for those who have rooted phone, the NH7 software for T-Mobile Galaxy S4 could be a new problem, as we know, this Android build brings security patches that will shut several known vulnerabilities that have been discovered, including the towelroot app.
You will not find noticeable changes on NH7 build, since it’s only a minor update to Android 4.4.4 KitKat. It also has improved Wi-Fi calling capability and also deliver a new feature that allows you to perform in-flight texting for free. Not just that, you can also send out and receive picture messages or even access to Visual Voicemail, thanks to T-Mobile and Gogo partnership.
Although only a minor update, the M919UVUFNH7 update is a must have update for some people who frequently make calls over Wi-Fi. And don’t be worried about superuser privileges, since several users on xda successfully bring back root on the T-Mobile Galaxy S5 running Android 4.4.4 official update, using a well-known method and some of you might use it before.
- T-Mobile Samsung Galaxy S4 with M919UVUFNH7 firmware.
- CF-Autoroot package by Chainfire for SGH-M919 variants.
- USB cable and mobile phone USB drivers.
- A Windows computer, as Odin flash tool only made for Windows OS.
T-Mobile Galaxy S4 runs Android 4.4.4 (NH7) root by using CF-Autoroot
Caution, this method will KNOX Warranty Void trip counter on your phone, in case your warranty has expired, this might not be a big problem. However, for those who want to avoid it, we advise you to wait for another KNOX free method.
- Extract the package that you downloaded earlier (CF-Auto-Root-jfltetmo-jfltetmo-sghm919.zip), then extract it by using WinZip or 7zip.
- Run the Odin3-*.* .exe from the extracted folder.
- Hit the PDA or AP button on the Odin3, then locate an Auto-CF-Root -*-*-*.tar.md5 files from the same folder where you get Odin3.
- Set your phone to boot into download mode, turn it off, then turn it on again by pressing Vol down + Home + Power, when you see a caution, just select continue.
- Connect the TMo Galaxy S4 to the computer, and ensure it is recognized by Odin3.
- Hit Start button and let it reboot your phone into recovery mode, then root your phone.
When all goes well, then you will find SuperSu app installed, just run it and let it configure and updating the su binaries for the first time. Your T-Mobile Galaxy S4 running Android 4.4.4 (NH7) should rooted now, try to the make a backup with Titanium Backup.