This ROM is based on the from the n820 (MT6577) JB 4.2.2. This educational guide helps you to get Android 4.2 Jelly Bean ROM on Cynus T1.
How to flash:
First you must have already an CWM/TWRP recovery
Then start by making an FULL nandroid of your phone.
-Wipe Dalvik Cache
Primarily, though, this is another maintenance release for Jelly Bean, and the 4.3 release builds on what was already there in 4.1 and 4.2. Most of the new additions to the Android code base are focused on getting the OS prepared for connecting to wearable devices (with Bluetooth LE) and helping developers make even better applications.
Android 4.3 Jelly Bean will be hitting Nexus 4, Nexus 7, Galaxy Nexus and Nexus 10 devices from today, so now’s the time to start hammering that “Check for updates” button, if you’re into that sort of thing. Google Play edition phones are promised updates “very soon.”