Another updated build [21.40.1220.1615] of Android 6.0 Marshmallow has been provided officially. The users can Update ZenFone 2 Laser ZE550KL and ZE551KL via both OTA and Manual download method. This is the more enhanced and optimized build that will improve the users experience and device performance.  Here you can manually download the update package from the link given below. Apply the listed steps to manually Update ZenFone 2 Laser ZE550KL/ ZE551KL to Official Marshmallow Build [21.40.1220.1615].

WARNING: Via this tutorial and firmware you can update ZenFone 2 Laser ZE550KL/ ZE551KL models only to Marshmallow [21.40.1220.1615] build. Also, softstech.net has no responsibility for successful and effectiveness of the updates. Keep continue at your own risk.

Update ZenFone 2 Laser ZE550KL/ ZE551KL to Official Marshmallow Build.

Builds Detail:

• Device: Asus ZenFone 2 Laser ZE550ML/ ZE551ML (Z00L/ Z00T).
• Firmware: Android 6.0 Marshmallow.
• Build NO: [21.40.1220.1615].
• Previous Build: [1.17.40.1531].
• Region: Globle.
• SKU: [WW].
• Status: Official OTA- Full package.

Pre-requisites:

• First of all backup the important data of your device.
• At least 60% charge at your device’s battery is important before proceedings.
• Install the USB driver of Asus (Intel) at the PC. [Download Here]

Download Official Marshmallow Build ZenFone 2 Laser ZE550ML: |Official Link|

File: [UL-Z00L-WW-21.40.1220.1615-user.zip] – |Size: 1.62 GB|

Download Official Marshmallow Build ZenFone 2 Laser ZE551ML: |Official Link|

File: [UL-Z00T-WW-21.40.1220.1615-user.zip] – |Size: 1.63 GB|

Installation Steps to update ZenFone 2 Laser

1. Download 40.1220.1615 zip file, particular for your model from one of the link above.
2. Then connect ZenFone 2 Laser via USB cable to PC. >> Copy the firmware zip file into the home folder of external SD.
3. After copying gets successful, unplug the ZenFone from the PC.
4. Check the notification and tap on it.
5. Do confirm to start the installation.
6. Wait until completion of the process.

Enjoy! Update ZenFone 2 Laser ZE550KL/ ZE551KL successfully completed.

For further inquiries, do comment us.