No, any JB roms that are available now for i9000 are not official builds, therefore classed as ports. The MIUI 4.0 and 4.1 for I9000 are ports.
Tnx for replies.
I just want stable, fast, laggless & smooth MIUI V4 (ICS), that's all
Shouldn't be JB.
Tnx again for your job guys