The IDStorage handles various things like connecting the PSP to the PS3, USB functions, and even a little operation of the battery. I'm not sure if upgrading to Official firmwares then downgrading back to 1.5 will fix the problem though.
I also found an easy installer for the Pandora battery. This might help the people that are still having problem making their own Jigkick battery and magic memstick.
Rapidshare link:
http://rapidshare.com/files/51253858...s_Box.rar.html
Sendspace link:
http://www.sendspace.com/file/rn6lpd
The source link is here:
http://boardsus.playstation.com/play...cending&page=1
Kazukage Gaara, you might want to put these links or upload it to a site that doesn't expire on your first post.
Oh, and homebrew doesn't brick a PSP. Unless People will make a "game" that will brick a PSP but no such things are existing at the moment. You can only brick your PSP if you messed up your PSPs flash0 by placing an incompatible file or deleting necessary files on it. And since updating or downgrading a PSP is writing some files on flash, there is also a risk in there. However if you follow the instructions then you don't have any worries especially since this unbricker is already here.
