This ROM is based on the from the n820 (MT6577) JB 4.2.2
JB.4.2.2-imos88
JB.4.2.2-imos88-2

How to flash:
First you must have already an CWM/TWRP recovery
Then start by making an FULL nandroid of your phone.
In Recovery:
-Wipe Data
-Wipe Cache
-Wipe Dalvik Cache

Download
JellyBean4.2.2imos88.final.zip
Mirror:JellyBean4.2.2imos88.final.zip

Source:carakamu.com

Credit
superdragonpt and pratikmore – [DEV][ROM][JB 4.2.2]SoC MT6577[DISCUSSION]
Dark4Droid – PureJB 4.2.2 for Micromax A110