hey guys, i have a psp classic currently running on the custom firmware 3.52m33. i've gotten this far pretty much by myself (with a few searches on the message boards ofcourse) but i can't figure out how to update 3.52m33 to 3.52m33-4. I understand you have to go from 3.53m33-4 to update to 3.90m33 but i can't find find any threads about it currently. I have all the files (the update) but i just don't wanna brick, or even semi brick my baby if possible. thanks for reading guys!