[Request-Help] PSP firmware update suggestions

[KatorzeLe]

Its been quite some time since I hacked my PSP. I think the current firmware I have is something like "Prometheus 5.50 Gen-D3 (final)".

Anyways, I want to play Monster Hunters 3rd Portable with the english patch, but I need a later firmware. Since I need to update my firmware, I might as well get the best firmware to date. That said, what is the current best firmware for the PSP?

I am looking for one that has great compatability, allows one to use the latest plugins, and also allows you to play ISO/CSO files without patching them.
Suggestions?

[gezegond]

I've recently upgraded to 6.60 ME. Works great. The latest posploader to go with it is v4e.

[meganova]

PRO and ME are the latest CFW available for now, where both offer great games compatibility, as well with lots of plugins support.