Finally root has been achieved again on AT&T Galaxy S4 (SGH-I337) running I337UCUAMF3 firmware, thanks to jortex from xda who build a new root exploit for our device. We all know, the most recent OTA update from AT&T and Samsung (Build number: JDQ39.I337UCUAMF3) that we received a few weeks ago contains new security patch, as a result our device are unable to get root access back after installing the update, as the older root method isn’t working anymore.
For those who previously updating their Galaxy S4 firmware to MF3, now you can regain root privileges, although the new method isn’t a one-click solution, but it’s not as difficult as you think. However, an SD card is required to make the rooting process running well.
This method can operate directly on your phone so it does not need the help of any tool, but if you understand the adb (android debug bridge) you can use a PC/Laptop to perform this method. Below is a step by step how to root SGH-I337 running I337UCUAMF3 firmware.
- Make sure to backup all the external MicroSD card contents and format it again to exFAT.
- Grab a root exploit from jortex’s thread on xda and save the file on the external SD card.
- Extract using AndroidZip app or other apps that have the same capability, you will see a new folder “Root_for_ATTSG4_FM3″, open the folder and move all files/folders in it to the root of the external SD card.
- Download and install Terminal Emulator app from Play store.
- Now open the terminal app then run the following command:
- If the exploit goes well, then you will see a new app installed on the app drawer called SuperSU.
- To verify root, now try to install root checker app.
Now root privileges is reclaimed, it is time to freeze some unused bloatware and performing some tweaks. If you don’t want to accidentally accepting an update, you can block future OTA on AT&T Galaxy S4.