Android 6.0 latest build 4.21.40.74 for Asus ZenFone Zoom has been provided officially by the manufacturers. This update is for ZX551ML variant, and is available via OTA. Check OTA updates or try the under mentioned link to download and upgrade Asus ZenFone Zoom manually. step by step guide is also available herewith.
WARNING: This firmware and guide are only to upgrade Asus ZenFone Zoom ZX551ML to latest Marshmallow build. Not compatible with other devices. keep continue only at your own risk.
Build Detail:
- Device Info: Asus ZenFone Zoom ZX551ML (Z00A).
- Firmware: Android 6.0 Marshmallow [4.21.40.74].
- Running Build: 26.40.108.
- Region: Global.
- Update Type: Full Package OTA.
- Update Status: Official.
Pre-Requisites:
- Safely backup all your data at ZenFone Zoom first. [Full guide]
- Charge ZenFone Zoom battery more than 70%.
- Install Asus/ Intel USB driver at your window PC here. [Link]
Download 4.21.40.74 Marshmallow build for ZenFone Zoom. [Link]
Download Name: (UL-Z00A- WW- 4.21.40.74- user.zip) Size: 1.14 GB.
Upgrade Asus ZenFone Zoom Step By Step Tutorial.
- Just download the update’s zip file from the link.
- Now transfer the downloaded zip package to device internal SD.
- Unplug ZenFone from the PC after copying completes.
- Now you will notice update notification automatically at notification bar.
- Tap it and follow the on-screen instructions.
That’s how to Upgrade Asus ZenFone Zoom to Marshmallow latest build.
