How to Downgrade Asus Zenfone 4,5,and 6 from Kitkat to Jellybean

Updating to the latest operating system on our smartphones is very exciting. The new features and new interface make us want the latest release of Android for our device. So, you updated your Zenfone 4, 5 or 6 smartphone to Android Kitkat but due to the numerous bugs, you want to revert to the former firmware. In this article, I’ll teach you how to downgrade Asus Zenfone 5 (4 or 6) from Android Kitkat to Jellybean.

Disclaimer: Do this at your own risk! I’m not responsible for any damages or bricked devices that may arise during the process.

You need the following tools and software to downgrade your firmware:

Intel USB Driver for AndroidADB Fastboot ToolRecovery image for Asus Zenfone 4, Zenfone 5 orZenfone 6Android Jellybean for Asus Zenfone 4, Zenfone 5 orZenfone 6A working PC and compatible data cable

Downgrade Asus Zenfone from Kitkat to Jellybean

Download Intel USB Driver for Android and install it on your PC.Download and extract ADB Fastboot ToolDownload recovery image for your device and copy it to ADB folder. Rename it to file.imgDownload Android 4.3 Jellybean firmware for your phone. Extract it and rename it to file.zip. Copy the file to the ADB folder.Enable the USB debugging option. Go to Settings> About> Software Information> and tap the build number 7 times to reveal the developer option.Connect your phone to the computer using a compatible data cable.Open ADB folder and Open Command Prompt ( Shift+right click> Open command here )Type the following: adb reboot bootloaderIf the reboot is successful, enter fastboot and type:fastboot flash recovery file.imgGo to ADB, choose Recovery, when the Android robot appears, press volume up/volume down and chooseupdate from ADB.Type the following: adb sideload file.zip and wait until flashing is complete.Wipe cache and data. ( Turn off the phone and boot to recovery, choose wipe data and wipe cache partition)Reboot your phone

Your Asus Zenfone 4, 5 or 6 smartphone is now back to Jellybean! If you managed to soft bricked your Asus Zenfone 5, here’s the bootloop solution for Asus Zenfone 5

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How to Update Zenfone 6 to Kitkat Manually

Follow the procedure carefully. We will update Zenfone 6 to Kitkat 4.4.2 manually.

1. Download all the files below according to your firmware version.

Download Recovery for Zenfone 6

Download Zenfone 6 Kitkat ROM

Download ADB Driver

Download Intel USB Driver

2. Install the Intel USB driver to your Windows computer.

3. Extract ADB Platform Tools to a folder on your computer.

4. Rename the Zenfone 6  recovery that you have downloaded earlier and rename it to file.img then copy it to the ADB folder.

5. Extract the Zenfone 6 Kitkat firmware from the Asus site and rename it  to file.zip then copy the file to the ADB folder.

6. Enable the USB debugging option. Go to Settings> About> Software Information> and tap the build number 7 times to reveal the developer option.

7.Connect your phone to the computer using a compatible data cable.

8. Open ADB folder and Open Command Prompt ( Shift+right click> Open command here )

9. Type the following: adb reboot bootloader

10. If the reboot is successful, enter fastboot and type:fastboot flash recovery file.img

11. Go to ADB, choose Recovery, when the Android robot appears, press volume up/volume down and chooseupdate from ADB.

12. Type the following: adb sideload file.zip and wait until flashing is complete.

13. Wipe cache and data. ( Turn off the phone and boot to recovery, choose wipe data and wipe cache partition)

14. Reboot your phone

You now have a Zenfone 6 upgraded to Kitkat! Cheers!

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How to Root Asus Zenfone 6 Kitkat

After updating  Zenfone 6 to Kitkat, you’ll lose your root access. If you’re not satisfied with the new update, try to downgrade Asus Zenfone 6 Kitkat to Jellybean.

You can also root Asus Zenfone 5 Kitkat using these steps. Just follow carefully.

Disclaimer: Do it at your own risk! I’m not responsible for any damage or bricked device that may happen during the process.

1. Download the necessary files from the links below.

Download Zenfone 6 Kitkat Root Package

Download Asus Zenfone 5 Root Package

Download Intel USB Driver

2. Extract the contents of Asus Zenfone 6 Root package to your computer.

You can also read: Update Zenfone 6 to Kitkat

3. Download and install Intel USB driver for Android from the link above.

4. Connect the phone to the computer (make sure to enable USB debugging option first).Go to the root package folder that you extracted earlier and click CheckBeforeAction.bat . If you have any Android emulator installed on your computer, turn it off because it may affect the root program.

5. It will first install the  ASUS Android Composite ADB Interface. Make sure you have installed the Intel USB driver earlier or  the installation screen will appear.

6. After installation,check if it is successful. Go to the device manager of your PC to check if  ASUS Android Composite ADB Interface was properly installed.

7. Phone then reboot into the bootloader, then will install a driver. Go to the device manager and check if the ASUS Android Bootloader is there.

When these two drivers successfully installed on your computer, go to the Asus Zenfone root package folder and click Root-ZenFone6-en batch file then follow the instructions to start the root program. Your device will now boot for about 6 times. When finished, click EnterShell batch file to check if the rooting process is successful then a command prompt will pop-up. Type su and press Enter. There will be a pop-up message informing you successfully root Asus Zenfone 6 running on Kitkat.

Why Root Asus Zenfone 6 Kitkat?

Rooting means you are getting the superuser capability on your smartphone running the Android operating system. Once you have root access on your device, you will now be able to:

Remove all the bloatware that comes with your Zenfone 6 out of the box.Increased your battery life and free up some RAM by Greenifying autorun apps.Customized your device the way you want it to be using different third-party apps requiring root access.

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