Infact, 2 Cultuses (whats the plural :S). We bought one in 2011, same as u did, as a workhorse, but were extremely disappointed. Thought the car was a faulty piece, took it to PS, they said "hahaha, ki hogya paa jee, gaddi is A1, hamen to koi awaaz nai aa rahi"
Me: WTF :@
Sold it, thinking that may be another one could do the job, but an hour before purchase, took a test drive on 2 other cars, they were all the same!
Dropped the idea, bought a slightly used Honda city 2008, it cost just 25k more than the crap tin can and trust me is far far far ahead of it. A real workhorse.
And probably your gut feeling is positive. The unit is the same which is being provided world wide, there is a USB option in it but everyone is sort of waiting for a DIY. Cz most of the civics are getting sat navs, those who rely upon reverse cams can't live without em and there is no option to put a cam in the stock dashboard.