I've picked up a few newer PSP games lately like Half Minute Hero and FFIV Complete and I can't play them because my CFW is too old. I don't want to upgrade to official FW obviously.

I have an original, "fat" PSP and my current CFW is 5.00.

My other question is will I need to upgrade sequentially, or will I be able to make a big leap to a newer CFW?

Thanks.