Downgrade Firmware ASUS Zenfone 2 Laser (ZE550KL)

Downgrade Firmware ASUS Zenfone 2 Laser (ZE550KL)
How to downgrade firmware ASUS Zenfone 2 Laser – Actually Android users really want to taste new update for their phone but new OTA update for Zenfone 2 Laser version v1.77.40.1106 has many issues. We don’t need to to explain or discuss in detail about the issues because you visit this article means you know the issues and want to fix it or at least want to downgrade ASUS Zenfone 2 Laser.

In this chance we would like to guide you how to Downgrade ASUS Zenfone 2 Laser to Lollipop if this is what you want to leave the issues on new update. We can’t make sure whether downgrade ASUS Zenfone 2 Laser ZE550KL can work on downgrade ASUS Zenfone 2 Laser ZE500KL or not because we just tested in on one type only. If you are Android geeks who like to mess up your phone you may try it on different type, because once it goes brick or stuck on logo you know what you can do. But for those who are newbie, you better just follow this instruction Downgrade Zenfone 2 Laser with ZE550KL only.

This instruction just guide you to downgrade its firmware, it means this is not downgrading its OS such from Marshmallow to Lollipop etc. If you’re looking for downgrading OS, you can go for the others websites or blogs.

Try this tutorial on your own risk and don’t forget to take back up your data and file from your phone before downgrading it.

PC or Laptop
  • USB Drivers for ASUS Zenfone 2 Laser
  • Enable USB Debugging on your phone, Go to Settings > About > tap multiple times continuously on “Build number”to active Deeveloper options and enable USB Debugging option.
Download files

How to downgrade ASUS Zenfone 2 Laser
  • Download all files we’ve provided in this article! And file to root directory of your SD Card
  • Extract ADB Fastboot Tool.rar as you extract rar file!
  • Move Stockboot.img into extracted ADB Fastboot Tool.rar folder!
  • In ADB Fastboot folder, open command windows by pressing Shift+Right+clik Open command window here.You can refer as the following picture below!
  • Now, enter the following command in command window! Then click OK if prompt on your device after entering the below command
adb devices
  • If you found your device in list if you have properly installed USB driver and you are good to go!
  • Now to boot your device into fastboot mode (To flash/install old firmware). Enter the below command.
adb boot loader
  • Now its time to flash stock boot.img file. Enter the below command. By Flashing this boot.img File Your Device Will Automatically Reboot into Asus Stock RecoveryVersion WW1.16.40.763. If you got Error Something Saying To Unlock Your Device!! JustClick Here and Follow First Two Steps Of That Post. And Try Again Using This Command.
 fastboot boot Stockboot.img
  • In Recovery select Apply Update from SD Card! and then locate file and flash it!
  • Remember this process takes about 4 - 5 minutes, after the installation process complete, reboot your phone! To check whether this downgrading complete or not just go to Settings > About Phone > Software Information.
  • Done, you've successfully downgraded your ASUS Zenfone 2 Laser!

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