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~~!