A new ROM is now available for the Galaxy 551 users
The guy mifty informed me about it
ROM Developer Squadzone of Galaxy Ace-Mini Fame added Callisto to his Development Cycle
It is based on CM 7.x and boasts features of AOSP-AOKP
Almost everything works according to him .
It’s a CWM ROM so you need CWM installed
Here is the Madteam thread
Download Link for ROM
His Blog link
Dont mirror the Link
THIS ROM IS ABANDONED BY SQUADZONE ,DUE TO LACK OF DEVICE .
CALLISTO IS OFF THE DEVLOPMENT LIST OF CYANMOBILE .
USE/RUN AT YOUR OWN DISCRETION