: Most users received this via an Over-the-Air (OTA) notification found in Settings > About > System Update Manual Flashing
Note that the APP2SD feature is not supported in Marshmallow; you must move apps from your SD card to internal storage before updating. How to Install (Manual Update) asus zenfone selfie z00ud firmware 6.0 1
You can find the specific firmware file ( UL-Z00T-WW-51.15.40.1582-user.zip or similar) containing the 6.0.1 Marshmallow update through online repositories. File Name Examples: : Most users received this via an Over-the-Air