Anyone looking for a reason to root the Samsung Galaxy S4 SPH-L720 these days should look at the Viper4Android application. As the smartphones in the Samsung range continue to evolve, there are root applications out there that can help transform your old hardware and features into something that’s better, almost as if your device has received an upgrade of a certain kind.

Specifically, the Viper4Android application focuses on improving your sound quality, offering a variety of new options to tweak your sound to the max. It will let you listen to your favourite songs with a much more refined sounds that you could ever get from the standard amplifier, let alone smartphone.

Samsung Galaxy S4

The rooting file in this guide made by Chainfire is based on LRX22C.L720VPUGOH1 firmware which is part of a regional roll out for Android 5.0.1 Lollipop. It doesn’t matter what language or region that same firmware rolled out to because you do not need to flash it on your device before using the guide. The firmware build ID is given by Chainfire to us to use as an indicator only. He says that some Samsung devices like the Samsung Galaxy S4 will not boot old images if this gets old.

Files You Need

  1. Download the new CF-Auto-Root file for the Samsung Galaxy S4 SPH-L720 on Android 5.0.1 from here.
  2. You will find a version of the Odin flashing tool is bundled with the rooting exploit. If that version doesn’t want to flash for your device, try downloading a different version and trying again.
  3. You are choosing to void the warranty of your Samsung Galaxy S4 SPH-L720 when you follow this guide. You can flash the stock ROM for the SPH-L720 from Sam Mobile and it will unroot and make the warranty work again. Just make sure you are installing the right stock ROM for your region or else it might brick your device.

Rooting the Samsung Galaxy S4 SPH-L720 running on the Android 5.0.1 Lollipop update

  1. Enable the USB Debugging Mode on your Galaxy S4 SPH-L720 smartphone.
  2. Download the rooting exploit for the S4 device directly to the Windows PC and extract the file to your desktop.
  3. Right-click on the mouse on the Odin executable file and choose to run your flashing tool as an administrator.
  4. Do not make any changes from the default settings you get into the Odin application.
  5. Turn off your Samsung Galaxy S4 device and reboot to download mode using the hardware key combination for that mode.
  6. Connect the Samsung Galaxy S4 to the computer with the USB cable.
  7. Wait for a few seconds for the ID; COM port to light up a green color. No green color means the device is not connected and you will need to download and install the universal Windows ADB drivers for your computer and try again.
  8. Click the AP button from the Odin user-interface and browse the desktop for the rooting package.
  9. Once loaded, click the Start button and it will now flash that rooting file to your Samsung Galaxy S4.
  10. Wait until your Galaxy S4 says it is restoring the stock recovery, cleaning up and then rebooting in 10 seconds.

The Samsung Galaxy S4 smartphone with the SPH-L720 model number will now reboot in recovery mode; this happens automatically because Chainfire has programmed it that way. It’s also an essential part of the rooting procedure and if it doesn’t happen to your S4, it will not be rooted yet. Anyone who does not reach recovery will need to manually boot the Samsung Galaxy S4 to recovery mode after the flashing finishes.

In conclusion, that’s how to root the Samsung Galaxy S4 smartphone with the SPH-L720 model number. You can install the root checker application from the Google Play Store if you want to double check it did work for your device.