Marshmallow Update for ASUS ZenFone 2 ZE550ML and ZE551ML

ASUS ZenFone 2 getting Android Marshmallow Update – Some time ago Asus Zenfone 2 Laser ZE500KL and Zenfone Max ZC550KL already getting an update to Android 6.0 Marshmallow. And now, turn Zenfone 2 ZE551ML and ZE550ML could taste the sweetness of the marshmallow. The Android Marshmallow software update for the ZenFone 2 is an over-the-air one and was pushed out by ASUS on June 13.

Not only does the software update bring the Asus smartphone from Lollipop to Marshmallow, but the ZenFone 2 with model number ZE550ML and ZE551ML also benefits from the fact that the bloatware on the smartphone gets removed. Basically, over a dozen apps will not be pre-loaded on the ZenFone 2 once users have updated their handset to the Android 6.0 Marshmallow OS.

If the FOTA update hasn’t reached you yet and you really can’t wait, you can follow the instructions for a manual update and download links in bellow.

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Release Note

  1. Software update to Android 6.0 Mashmallow. Internal storage will decrease slightly after update, suggest to back up data and relocate media file (pictures & video clip) to SD card to reserve enough storage before starting the software update.
  2. Android Marshmallow won’t support APP2SD. Please move apps to internal storage before system upgrades.
  3. Multi-user function won’t be supported if the account is deleted. Please keep your account to continue usage.
  4. The apps listed below will no longer be pre-loaded once your device has been upgraded to Android 6.0 (Marshmallow).
    • Omlet Chat
    • Data Transfer
    • Photo Frame
    • ASUS Backup
    • Dr. Safety
    • What’s Next
    • Party Link
    • Remote Link
    • PC Link
    • Yahoo Shopping
    • EZ Ding
    • TripAdvisor
    • Zinio
    • iReader
    • Dr.eye
    • Google+
    • Puffin Browser
    • Mirror
    • Google settings (Integrated in ASUS Settings)

Add new features and new apps

  1. Google Calendar
  2. Google Messenger
  3. Dr. Booster

Removed Apps:

  1. ASUS Emai
  2. ASUS Calendar
  3. ASUS Messaging will no longer be pre-loaded in this version. You can use Gmail, Google Calendar & Google Messenger provides corresponding services

Please backup your SDcard data before upgrade to Marshmallow with following steps:

  1. Connect your ZenFone and computer with USB cable
  2. Enter your ZenFone storage via computer
  3. Select all data and copy it. Paste all your SD card data to your computer

Steps of Update:

  1. Check software version of your device**
  2. Download device software and Update SOP (From “Manual” Item)
  3. Only apply to same SKU update, Example: WW->WW, CN->CN, TW->TW.
  4. Software update cannot transfer the software SKU and downgrade the software version.
  5. Wrong SKU may cause update failure, please update the same SKU version only.

How to update the firmware on Asus Zenfone 2 ZE550ML and ZE551ML

  • How to update Manual ?
  • Tutorial HERE
  • How to update via ADB sideload ?
    Tutorial HERE

Download Android 6.0 Marshmallow for ZenFone 2

Version WW_4.21.40.54 (ZE550ML/Z008)

File Size 1.1 GB
Download from Full Firmware

Version WW_4.21.40.61 (ZE551ML/Z00A)

File Size 1.1 GB
Download from Full Firmware
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