Asus has begun rollout of a new OTA update, that fixes and optimizes as many as 28 items — yep! — while also adding more than a couple of new features in certain areas of the device.
The update is being pushed to both popular variants of the Zenfone 2, ZE551ML (comes with Full HD display) and ZE550 ML (cheaper HD display toting variant). The software version is WW_V220.127.116.11 for ZE551ML, and WW_V18.104.22.168 for ZE550ML.
The changelog, given below remains same for both the devices even though software version isn’t exactly same. The release date of the update is today, August 12, 2015.
While the firmware for manual installation should be available soon, you can force your device to receive the update too. For this, find the system update option in Settings app, and then use the ‘check for update’ button.