Update [January 17, 2017]: Asus Zenfone Go (ZB500KG) getting an OTA update with firmware version 12.0.0.0126. The update brings Emergency Call support for India, Optimizes power consumption and updates pre-installed Asus apps.
Previous update: An OTA update is now being released for the Asus ZenFone GO units with model number (ZB450KL). The update will bring a few fixes for the camera and minor improvements for the device.
The update, arriving as version 22.214.171.124, will fix the EXIF display issues when enabling location services and improve the low light picture quality of the front camera. The continuous shot flash issue is also fixed and the quality of the different beauty parameters enhanced.
Also, both the Asus Apps and DTAC Music Infinite version are upgraded, along with a new Singapore operator MMS setting updated. The Facebook go live function codec is also fixed.
Since it’s an OTA update, the device might take a while before it receives a notification. You can, however, check it manually, by going to Settings » About Phone » Software Update, there you can see if you already have the update ready for your device.