Good news for all MyPhone A919i Duo users, the Android 4.2.1 JellyBean update is now out. You can download the update files and flash it on your device via CWM or TWRP.
For more information, visit this post on MyPhonePH forum to see the detailed instructions and links to files needed.
This is an official MyPhone A919i Duo Android 4.2.1 JellyBean ROM, pre-released from official MyPhone source. This will roll out sooner so if you think the process is quite complicated for you and you want to upgrade, just wait for the official announcement and follow MyPhone’s instruction whether it could be OTA or a “must-bring to their service centers” way.
Here are some screenshots of the 4.2.1 JB ROM on the MyPhone A919i Duo:
Photo credits: Lino Constantino of MylPhone A919i Android UsersSearch terms: how to update myphone A919i