Newbie question: How to install M33's 3.52-4 CFW

[tsekov]

My PSP was bricked (by stupid Sony updates in their UMD's) and now I'll use the Pandora battery to unbrick it but I have never installed a custom firmware and I'll be very very thankful to you if you can give me some kind of guide on how to update from 1.50 to the M33's 3.52-4 custom firmware
. Is the 3.52-4 archive all I need cuz it's so small I can't belive it's a whole firmware.

I'm very sorry if there's a guide already posted in the forum but I'm new to all this PSP stuff and don't know what to look for.