I guess i saved your day... Its v1 for sure.. and running 2.0 software i would say by looking at the chinese langauge, 2.0 supports international lang.
Good luck and don't pay more than 250 bucks for it..
It's definitely not the 3G. It's also not running 2.0, because it has the installer. I don't know if there were hacks for 1.x for the chinese characters. Probably were. Ask the seller questions about it and pay attention to the replies.