[ROM][Android 6.0] ZenFone 2 Marshmallow Firmware | ZE551ML/ZE550ML

Hello Guys, In this post I will tell you How to flash Full Firmware Marshmallow ASUS ZenFone 2 ZE551ML/ZE550ML. This is a beta version of Android Marshmallow. Before flashing this Firmware please make a full backup of your device data. You can also read my old post about How to Update Zenfone 2 Laser to Marshmallow ROM.

How to Update Manully ZenFone 2?
  1. Open Settings > About Phone > System Update
  2. Now Download the .zip file from the end of post link given
  3. Now Copy and Paste this .zip file to device your Internal Storage using data cable
  4. After Copy Unplug USB cable from your device and Update notice will be popping up on your zenfone screen
  5. Just click on update notification
  6. Done.
  7. Or you can Update your device using SD Card
  8. Just Copy and paste .zip to SD Card then open recovery by pressing the Power than Volume Down button and select apply updates from SD Card)
  9. Done

  • ADB Driver
  • Intel Driver
  • ADB Fastboot Tool
  • Zenfone Stock Firmware ROM (Download All Requirement files from the end of the post link given)
  • Windows PC

Install Drivers on your PC
  1. Download Intel driver from end of the post. Once it downloaded on your PC, Install it on your PC like normal software.
  2. Install ADB Driver
  3. Download ADB Drivers from end of the post.
  4. Connect your zenfone in recovery mode
  5. Run ADB Driver, and Click on Install button
  6. Done

How to flash firmware ZenFone 2 ADB Method

  1. Now Download ADB Fastboot tool and extract it on your PC desktop.
  2. Copy Stock ROM zip file in extracting adb folder.
  3. Now select recovery mode, then press the power button (if you don't know how to open recovery mode using droidboot mode, then Power off your device and Press and hold Power off  button after vibrate suddenly press the Volume Down button. May be it show no command or show android image, Now Press and hold Volume down and Volume Up button again and again it will show you recovery menu.
  4. Connect your device with PC using ASUS USB Data cable.
  5. Now select apply updates from adb option
  6. Now open the adb folder and press and hold the SHIFT key, then click Right Mouse Button and select the open command here.
    ZenFone 2 ZE551ML/ZE550ML Marshmallow Firmware
  7. Now Type below command and hit enter
  8. adb sideload filenamee.zip
  9. Wait until the process is complete
  10. Once it's done, Reboot your device
  11. This method can be used to downgrade. But Do it with your own risk.

Download here
Intel USB Drivers- http://intel.ly/1hCwP2o
ADB Drivers- http://bit.ly/2cUnlTg
ADB TOOL- http://bit.ly/2dGYSjQ
Firmware- http://bit.ly/2kwA1hW

Now you will get New Marshmallow Firmware on your Asus ZenFone 2. If you have Zenfone 5 then you can also check out How to flash Nougat Firmare on Zenfone 5 and Zenfone 6.

Gaurav Saxena

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