If your PS3 is on Firmware 2.10 now, it really depends on personal preference as to whether you want to go the JailBreak device route (most of which are based on you buying one, installing 2.41 Firmware and then JailBreaking the PS3 with them) or use one of the newer methods that may be a little more involved for some users but are free.
If you let me know which direction you plan to go I will reply with some relevant article links to help you from there.
except I'm the third owner of this ps3 and I have no knowledge of what blu rays have been played on it and since some people have had lack getting their blu rays back by downgrading then up grading that is my current option.
well I got it upgraded to 3.41 it didn't help my blu ray so I'm going to try the option to copy over the three files and see where that goes... I downloaded those files already but never found a tutorial on how to do that.