I tried r1632 and it kept rebooting and stuff, so I went back to r1367. I am sure that there are other people that want to do this to but there is not SD update from Dojo or I-Mobile; so I made one using system images, etc. Download and update same way other roms you got from Dojo.

Link to download: Jackbox r1367 SD update for i858 (http://www.mediafire.com/?in4fsq5d9gqk6r6)

http://www.ensogo.com/thailand/bangkok/invitation/?s=6e11b4019edbff2a317426194dde6946
I get lots of good deals at Ensogo Thailand. Check it out.