After mid-June had a first false alarm which was followed by weeks and weeks of silence, Asus takes advantage that we are at the start of the new course (IFA, iPhone 7, PlayStation 4 Neo) to start the official update to Android 6.0 Marshmallow on Asus ZenFone 2 (ZE550ML and ZE551ML), smartphones with Intel SoC and 4 GB of RAM.
In theory, Asus has already released the OTA for the update, and if you have not yet received it, you should receive it soon. If you want to update the firmware manually, it can also be downloaded from the official website of Asus, select the Android option, click on to check availability of firmware, and download the file of 1.13 GB.
Related to the Asus update, we are reminded that when you upgrade to Marshmallow, apps on microSD are no longer supported. So if you've moved the application data to the external memory in the past, we would recommend you to move everything back into the phone, especially before proceeding with the upgrade. Too many applications have been removed, and Asus suggests you to exchange them for the services offered on Google. For example, the Asus Messaging application for managing SMS, has been replaced by Google Messenger.
With the upgrade, this is the complete list of applications that will be removed to install or run out of other support, or for applications not found in the device: Asus Email, Asus Calendar, Asus Messaging, Asus Browser, Asus Music, ASUS Backup, Data Transfer, Jawbone UP, Google Play Books, Google Play Games, Google Play Newsstand, Google+, Mirror, Omlet, Party Link, PC Link, Photo Frame, TripAdvisor, What’s Next, ZenFlash, Zinio e Asus Game center. The new apps available for users are: Google Calendar, Google Messenger, Facebook, Facebook Messenger and Instagram.