I AM FROM INDIA .
HOW CAN I UPDATE MY ASUS ZENFONE 2 DELUX MOBILE .
Thank you for your asking.
1. Auto-Update (Same Android version only)
2. Manual Update
First, check your current firmware version by the following steps below: Settings>System>About Phone>Software information
Second, check ZE551ML firmware spot and download the next version after your current one
# ZE551ML firmware spot
Third, put the file into the root directory, the outermost place, of the internal storage.
Last, reboot, and tap the notification "system update"