Finally “The Next Big Thing” has been around, and in the U.S. started by AT&T-branded Galaxy S4 which for sale in late April. Although it’s just released, the root has been achieved in a way that was never thought of before, by utilizing Motochopper one-click tool. Once rooted, many Galaxy S4 users who want to customize their devices, such as removing bloatware apps, enable Wi-Fi tethering, change icons, fonts, etc.
Almost all tasks that require root access has the potential to screw up your phone, so if you ever get the problem after executing a mod, then the common solution is to restore the Galaxy S4 to stock using the original shipped firmware. Flash stock firmware also allowed you to unroot your smartphone, in some cases also able to recover from soft-brick.
Simple Unroot Only
These instructions for those of you who have rooted phone, but for folks who have never installed a custom recovery or custom ROMs. The simple explanation is, we make use of the “Full Unroot” feature on SuperSU app, which can get rid of the root app itself and the su binaries files on Galaxy S4. Unfortunately, Motochopper has packed with Superuser by Clockworkmod that don’t have a full unroot option, so we had to replace it with SuperSU by Chainfire, the steps are listed below:
- Install the SuperSU app from Google Play Store.
- Open SuperSU and grant superuser permissions.
- Using Root File Manager or ES File Explorer finds superuser.apk from “/system/app” and delete it. Reboot your device.
- Now open SuperSU, tap Settings then choose Full Unroot. Your phone will reboot and you will lose root privileges after booting up.
- If you are not able to completely unroot with SuperSU, then we recommend you to use the ODIN method below.
Completely restore to stock or unbrick
This guide is for those who have previously rooted but also have a custom recovery (TWRP/CWM) installed or running custom ROMs. To totally restore Samsung Galaxy S4 to stock we can take advantage of ODIN. This instruction is useful when you want to resell or warranty claim purpose.
- Just like another Samsung smartphones or tablets, there are additional security that counts how many times you have flash custom/unofficial firmware, and it might void the warranty, but you can still reset the flash counter to 0 by using the Triangle Away app. Get it here (upgrade to pro to support the dev).
- Install the latest device drivers, by using the most recent Samsung KIES.
- Download Galaxy S4 stock firmware, be sure to get the appropriate file for your phone model number (such as SGH-I337 for AT&T-branded device or SGH-i9500 for International models). Typically, a firmware files ending in *.tar.md5 but if you get it in the zip package (*.zip), then you need to extract it first.
- Turn off your phone, and then enter into Download mode (volume key down + home button + power button).
- Get Odin3 for Windows PC/laptop, work with the latest version of the Odin.
- Double-click “Odin3 v.3.07.exe” and connect your phone to the PC thru USB cable, and see if your phone is detected by Odin (ID: COM).
- On the right side of Odin window, hit the PDA button and point the firmware file that you downloaded and saved earlier (Step.3).
- Then press the Start button is on the bottom. Wait until the process is complete, when finished your phone will automatically reboot.
- Done. Good job, now you have an unrooted Samsung Galaxy S4 running stock firmware.