Asus Zenfone 2 Marshmallow Update

Asus brand’s Zenfone 2 serie phone which is also known with the model number ZE551ML is a 32 GB Android operated mobile device which is currently running on an older version of Android; Android Lollipop or technically known as Android 5.0 and the first possible auto update will definitely come with the release of Marshmallow version and Asus Zenfone 2 first will be running on Android 6.0 and wont be upgraded to Nougat 7.0 skipping Marhsmallow.

asus zenfone 2 marshmallow update

For those who may be interested, expecting an Android Oreo update for Zenfone 2 seems like a far dream at this very moment but once Zenfone 2’s Marshmallow update is released officially, the arrival of the next updates like Nougat 7 and Oreo 8 for sure will be faster since Google may even announce a newer update Android 9.0 in the beginning of 2018.

But for now, for 2017, expecting a Marhsmallow update for Asus Zenfone 2 is a realistic goal although the exact release date remains unknown. But remember that it is upgradable to Marhsmallow manually!

Release Date for Marhsmallow Update to Asus Zenfone 2

how to update Marhsmallow Zenfone 2 manually 2017

As indicated above, the exact release date of Android 6.0 update for Zenfone 2 is not officially annouced by Asus company but the device is upgradable to Marshmallow 6.0 already manually.

Below we will be giving you information about how to download and install Android Marshmallow update to Asus Zenfone 2; what are the pros and cons of Android 6.0 and the best features of Marhsmallow for Asus Zenfone 2 and the other features and spesifications of Asus Zenfone 2 mobile devices.

Features of Android Marhsmallow Update for Asus Zenfone 2

The most important and the newest, the best features of Asus Zenfone 2’s Marshmallow update is listed below. Make sure you understand what difference will it make the newer version of Android, before updating manually your Zenfone 2 from Lollipol o Marhsmallow.


Extra application information from the status bar
New application drawer
Rearranging the keyboard on tablets
Granular permitting control
New menu for RAM management
Choose Wi-Fi zone band
New volume control
Rearranging Storage Settings
Support native microSD and USB memory
More options in Recovery
Improved positioning with Wi-Fi and Bluetooth networks
Delete applications from the desktop
New Default Application Menu
Print Menu
Android Pay
Fingerprint Release
Visual menu of the answering machine
New animation
Improved widget menu
Easter egg

  •  Functions to optimize the battery

Battery Optimization for Applications
Dose mode, improved battery usage

Google Now from the Lock screen
Chrome Custom Tabs
Now on Tap
New Google settings menu

Customize shortcuts
Customize icons in the status bar

Share or delete a screenshot from the status bar
New sharing menu

Features and Spesifications of Zenfone 2 With Android Marhsmallow 6.0


Alternate names ZE551ML
Release date January 2015
Form factor Touchscreen
Dimensions (mm) 152.50 x 77.20 x 10.90
Weight (g) 170.00
Battery capacity (mAh) 3000
Removable battery No
Colours Glacier Grey, Osmium Black, Glamour Red, Ceramic White, Sheer Gold
SAR value 0.35


Screen size (inches) 5.50
Touchscreen Yes
Resolution 1080×1920 pixels
Pixels per inch (PPI) 403


Processor 2.3GHz quad-core
Processor make Intel Atom Z3580
Internal storage 32GB
Expandable storage Yes
Expandable storage type microSD
Expandable storage up to (GB) 64


Rear camera 13-megapixel
Flash Yes
Front camera 5-megapixel


Operating System Android 5.0
Skin ZenUI


Wi-Fi Yes
Wi-Fi standards supported 802.11 a/b/g/n/ac
Bluetooth Yes, v 4.00
Infrared No
Headphones 3.5mm
FM Yes
Number of SIMs 2
SIM Type Micro-SIM
3G Yes
4G/ LTE Yes
Supports 4G in India (Band 40) Yes
SIM Type Micro-SIM
3G No
4G/ LTE No
Supports 4G in India (Band 40) Yes


Compass/ Magnetometer Yes
Proximity sensor Yes
Accelerometer Yes
Ambient light sensor Yes
Gyroscope Yes
Barometer No
Temperature sensor No

How to Update Manually Asus Zenfone 2 to Marhmallow 6.0 Version of Google


If the automatic update has not yet arrived, you can do the migration process for Android Marshmallow manually. Just download the files directly from the ASUS website.


To download the update for Zenfone Zoom, go to the link corresponding to your smartphone below and in the OS field select “Android”.



From there will appear a screen with some options. Click “Firmware”.


The firmware menu has been opened. There are the latest system updates of the device.

For ZENFONE 2, we want the version: WW-
For ZENFONE ZOOM, we want version V4.21.40.115

Realize: there is an indication that the version is the new Android in the description and a detailing of the update. A very important point is:

“APP2SD will not be supported on Android 6.0 (Marshmallow.”) That is, you will not be able to access apps that are installed on your micro SD card, if any, transfer the app to the device’s internal memory before proceeding with the installation.

Understood this, just download the link “Global” as shown below, and save the file to your computer.


Download completed, now it is necessary to transfer the file to Zenfone. You can do this via USB cable or through the wireless transfer, which we already show you here in the blog how to do.


You need to place the file in the root of the device, which is the first location that appears as soon as you open the internal storage folder.



With the file transferred to Zenfone, restart the device. If you used the cable to transfer the file into your smartphone, disconnect it.


After restarting the device, a triangular icon appears in the upper left corner of the device. Swipe your finger across the screen from top to bottom and this will give you access to the notification bar. A “system update” message appears on the screen. Tap the message, select the update package you just downloaded, then tap OK. Another warning will appear asking if you want to proceed with the update. Just touch OK too and that’s it, the update will start.

The process will take a while, after all, it is the entire system of the device being updated. After that, optimization of the applications will be done so that they work properly in Android Marshmallow and, finished, update completed.