I have done it & it's working for my K608i. I flash with USB smart.
I get the firmware from rapidshare with ssw ext. & rename with mbn

I get this info from Se-nse forum :

SE-NSE Forums K790/800 Filesystem Parser

jagheterfredrik 2006-12-15 22:42
ssw = bin = mbn = fbn

sunzqi 2006-12-15 22:55
QUOTE(jagheterfredrik @ 2006-12-15 22:42)
ssw = bin = mbn = fbn

Thank you very much~~!