@UldisAlt
The last version is 14.2016.1612.146.
We would like to inform you that we no longer provide previous firmware versions or downgraded software packages on ASUS official website. This is to ensure that the security updates on your phone remain up-to-date with the latest firmware versions. We appreciate your understanding and patience. If you have any question or need assistance, please feel free to visit our service center or call the service hot line, we will do our best to provide help for your questions.
If you have a need for a system upgrade across versions, we recommend visiting a service center where our staff can assist you.
You can find service center locations at the following link:
https://www.asus.com/support/service-center-location
Sorry for any inconvenience it may be caused.
