ASUS rolls out Marshmallow starting with ZenFone 2 Laser
ASUS has started seeding Android 6.0 Marshmallow to its ZenFone 2 series of smartphones starting with ZenFone 2 Laser (ZE500KL).
For the ZenFone 2 Laser (ZE500KL), the update will carry the firmware version number V22.214.171.124. Aside from the improvements brought by Marshmallow, it will also remove some apps like ASUS Email, ASUS Calendar, and ASUS Messaging, and will be replaced by Gmail, Google Calendar, and Google Messenger.
To check for the update, you go to Settings –> About — > System Update.
source: ASUS ZenTalk