What is the most popular PSP firmware version? Obviously everyone will want to use there PSP's in different ways (watching films, homebrew, backup iso's etc.) but what firmware version is best for what? I would assume that like me, most people will want to have as many of the features available to them, so they can use homebrew as well as all the official sony features. I wonder if there is a consensus of the ideal firmware version? Thanks to the help of larrylje I am looking to upgrade to 3.52 M33 firmware. What firmware is everybody else using?