Asus Zenfone 2 Selfie has a 5.5″ Full HD display, a 64 bit Snapdragon 615 processor with 8 cores, 2/4GB RAM and 16, 32 or 64GB storage options. The USP of this device is the camera – both the front and the back camera have same specs – 13MP camera with dual-tone LED flashes. It currently runs on Android Lollipop but it will get Marshmallow update.
CM team have released an official CM 13 nightly for Zenfone 2 Selfie which will update the device to Android 6.0. Instead of waiting for official update, you can flash this ROM. A detailed guide on how to flash this ROM is given below.