Apologies if this has been covered many times already, but searching the board for three-letter acronyms has never worked very well.

I manged to get a dirt-cheap PSP Go recently, which has firmware 5.70 on it presently. What would be the best way to get custom firmware on it?

I found some perfectly-reasonable looking instructions at http://wololo.net/installing-pro-cfw-on-a-psp-go/ , but I'm concerned there might be something else I should know.