Right now I have a slim 640GB, I have about 30ish games on the hard drive. using the XplainUSB... running FM 3.41
Problem that I am having, have transfered over Test Drive 2 and Dead Space 2, can't seem to get them to work, Question is should I be upgrading to 3.55 in order to play? Its telling me that the games need 3.50 in order to play.
You can do either option. I personally am staying on 3.41 Hermes CFW for now, but obviously a lot of people are using the 3.55 CFW without issue. Deanrr recommends that you use Kmeaw CFW if you are going to use Multiman. I have tried a few of the eboot mods and they work fine as well.