I tried porting miui for my device (galaxy s duos) using nexus s rom as reference and pmp ultra as base. But alas! The rom did not boot even after repeated tries . Then I got to know that the rom I used was a jb one. Can anyone plz give the link of miui ics 4.0.4 version of nexus s or nexus one or anyother phone's miui link which is safe to port.