Sat Oct 16, 2010 11:51 pm by Devil May Cry
It matters on your model to be honest. If it's pandora compatible, then you're golden. Just get a Pandora and an MMS. There currently isn't a purely software method to hack a PSP on that high of a firmware.
If it's not pandora compatible, then you still might be in luck. There is currently a Kernel exploit being worked on for 6.20, but has been said to work on 6.30 as well. If they make a version for 6.30, you may have access to homebrew and eventually ISOs. I can't guarantee any of this though, as the maker has only confirmed a 6.20 release.