These are the instructions to root Samsung Galaxy S5 SM-G900T1 running on the Android 5.1.1 software update using a computer running Windows and the Odin flashing tool by Samsung.

REQUIREMENTS

• The following guide should be excluded from any Samsung Galaxy S5 smartphone that does not come with the model number SM-G900T1 — that’s the model number for MetroPCS subscribers. You can check what your S5’s model number is by navigating to the Menu > Settings > About Device > Model Number.
• The CF-Auto-Root package by Chainfire listed in this post is based on Android 5.1.1 and LMY47X.G900T1UVS1BOJ4 firmware. It doesn’t mean you need to be running the LMY47X.G900T1UVS1BOJ4 firmware, but it is an indicator to let you know what this exploit is based on. Some Samsung devices

BEFORE WE BEGIN

• Download the Samsung USB Drivers for your Windows-based computer. You need to install the drivers on your computer — especially if you have not installed any recently — before you start the guide.
• Some Samsung Galaxy S5 devices will not have the Developer Options menu unlocked. You can unlock the same by tapping on the Menu > Settings > About Device > tap the build number seven times. It will count you down when you have two times remaining before eventually telling you that you are using the device as a developer.
• Enable the USB Debugging Mode from the Developer Options menu by tapping on the Menu > Settings > Developer Options > USB Debugging Mode.

HOW TO ROOT SAMSUNG GALAXY S5 SM-G900T1 RUNNING ANDROID 5.1.1

1. Download the updated CF-Auto-Root package for the Galaxy S5 my MetroPCS from this link.
2. Download the Odin 3.09 from this link.
3. Extract the two files on the desktop like you would any other file by right-clicking and choosing the “extract here” option from the menu.
4. Turn off the Samsung Galaxy S5 smartphones.
5. Boot the Galaxy S5 in download mode by pressing the hardware key combination.
6. Connect the Samsung Galaxy S5 to the computer with the USB cable.
7. Click the PDA or AP button that is available from the Odin user-interface and browse the desktop for the tar.md5 file.
8. Do not adjust the default settings that come with the Odin application on your computer.
9. Click the Start button and wait for the Odin app to flash that tar.md5 file on your Samsung Galaxy S5 smartphone.
10. Keep and eye on your Galaxy S5’s display and it will tell you the device is about to reboot when the flashing is finished.
11. Watch as your Samsung Galaxy S5 reboot into recovery mode — this is normal and a requirement of the rooting to complete. You will now have SuperSU available from your app draw.

Anyone who does not have a device automatically reboot into the recovery mode will need to do that manually before you do anything else. You must hold the Volume Up + Home + Power buttons down when booting the device to reach the recovery mode.