As you might know, carrier locked devices are generally last to receive the Android firmware upgrades. Similar is case with T-Mobile, when all the devices around the globe are getting Android 5.0.1 Lollipop update, it hasn’t still finished releasing Android KitKat update for all its devices. T-Mobile Samsung Galaxy Tab 3 Android 4.4.4 KitKat update has just been released for the users in US.
The latest Android 4.4.4 KitKat update will bump the existing firmware version to T217TUVUBNL1. The update is about 537.05 MB in size and will be released via OTA (Over-The-Air) or via Kies over WiFi only. To install this firmware, you should be running the stock T217TUVUAML1 firmware version on your device. The official changelog isn’t descriptive on what additional this firmware upgrade brings to your Tab 3, other than all the KitKat perks and features.
Since the update is released via OTA, it will be rolled out in gradual stages to users. Once your device is ready to receive the update, the notification center of your device will receive a firmware update notification. To download the update, tap on the notification and tap on Download Now. Once the update is downloaded, tap on Install Now to begin the flashing procedure. Your device will automatically reboot and try to install the update manually.
Sometime, the automatic firmware upgrade notification fails to appear on the device. In such case, you should check for the availability of the update for your device manually. To check for the presence of an update manually, go to Settings > About Device > Software Update. If an update is ready for your device, you will be notified.
Additionally, you have an option to install the update via Kies. Just install the Kies software on your PC and enable USB Debugging on your device. Run Kies and connect your device to PC in Media device(MTP) mode via USB cable. If update is available for your device, Kies will show you a notification to install the update. Click on the notification and follow the instructions to download and install the latest Android 4.4.4 KitKat on T-Mobile Samsung Galaxy Tab 3.