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How to Downgrade ASUS ZenFone two Firmware


Yesterday ASUS gave us recent update inward ZenFone 2 ZE551ML 2.20.40.156 together with ZenFone 2 ZE550ML 2.20.40.135. Personally I don't similar this update because Now I can't role tertiary political party Themes, which you lot must download from Theme Store for free/paid themes from ZenUI designer together with I don't run across whatever practiced themes except Speed Themes :). This tutorial is applicable for Downgrading Firmware or fifty-fifty dorsum to stock rom. Please create it carefully together with DWYOR (Do it amongst your ain risk) because incorrect motility may campaign the device brick :)

Resources:

  1. ADB Fastboot Installer (Download Here if you lot don't accept it)
  2. ZenFone two Original Recovery.img, bootloader.img, boot.img (ZE551ML | ZE550ML)
  3. ZenFone Firmware (ZE551ML | ZE550ML) <-select OS Android together with download your firmware

How to Downgrade ASUS Zenfone two :

  1. In this tutorial I volition downgrade from 2.20.40.156 to 2.20.40.139
  2. Download ADB together with Install it
  3. Download Recovery.img, bootloader.img, boot.img (lower version than your electrical flow version)->I download 2.20.40.97 - must lower than 2.20.40.156
  4. Download Firmware (lower version than your electrical flow version) -> I download 2.20.40.139 version
  5. Place Recovery.img, bootloader.img, boot.img to Downgrade Folder
  6. Go to Fastboot Mode (Turn off device together with press power+volume up) or conncet the device to pc/laptop at downgrade folder press shift+right click -> opened upward ascendance hither together with type adb reboot bootloader (need usb debugging activated)
  7. Connect your Zenfone two to PC/Laptop
  8. Type on CMD (press run inward afterward each line):
    9. fastboot flash fastboot droidboot.img
    fastboot flash recovery recovery.img
    fastboot flash kick boot.img
  9. Enter recovery (Tutorial Here)
  10. Select Apply update from adb
  11. Open Ze551ml firmware folder and press shift+right click > opened upward ascendance here
  12. Connect your Zenfone two to PC/Laptop
  13. Type on CMD (press run inward afterward each line):
    14. adb sideload UL-Z00A-WW-2.20.40.139-user.zip
  14. Factory Reset (To avoid a crash error, but non perform manufacturing works life reset is ok)
  15. Done

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