Android Marshmallow for Asus ZenFones
Asus has released a new OTA update for ZenFone 2. ASUS

An over-the-air update is now making its way for Asus ZenFone 2 handsets.

Bearing software version, the update is available for the ZE551ML model only. Check out the following official changelog shared by ZenTalk, on the Asus support forum, to see the changes and features added in the new release.

Firmware details

Version: V2.18.40.12_20150529

Model: ZenFone2 (ZE551ML)

Release date: 4 June

Official changelog

  • Use Google search widget on default home screen (WW SKU)
  • Improve calendar app stability
  • Fix calling screen flow issue when making calls by both SIM1 and SIM2
  • Improve telephony stability
  • Fix the do not disturb mode issue that "Allow only priority interruption" would be back to default settings after reboot
  • Fix MyASUS stability issue
  • ASUS Power Saver
  1. Provide a variety of power-saving modes for users to choose from
  2. Auto change to ultra-saving mode when low battery
  3. Add auto switch mode
  • Add YahooAuction (TWSKU)
  • Fixed 3rd party app issue
  • Return OK when setting parameters during picture encoding
  • Do not vibrate when android mode is incall
  • Update FW
  • Fixed video gamma incorrect
  • Improve image quality
  • Improve service stability
  • Improve modem stability from crash
  • Improve signal bar stability
  • Force output to be primary output when using BT_SCO
  • Fixed system will reboot when connecting to VPN
  • Increase multipartition number to 256
  • Fix download Yahoo mail attachment issue when using ASUS Browser
  • Fix several browser issues
  • Optimise Miracast connection UX flow
  • Fix the issues of wallpaper installation failure through Dropbox
  • Improve music app stability
  • Fix several issues in settings
  • ASUS support UI improvement
  • Improve sound recorder stability
  • System UI: Improve the SIM icon in system UI after FOTA MR6
  • Increase 3dB gain for receiver
  • Improve flip cover function
  • Using HW encode for 4G SKU
  • Correction privacy mode can not start a single hand mode
  • Fixed difficult to lift the screen fixed function
  • Fixed SIM settings issue
  • Fixed browser unusual problem

The FOTA file is available for those who have not received the official notification yet .

Download link: OTA software version or, hit the threads over XDA forum here and here.