It has come to my attention that there is a major problem/side-effect with DCv8's IDStorage options, mainly the ones to rebuild IDStorage and to change region. This problem is the fact that a PSP that has had it's IDStorage rebuilt or had it's region changed using DCv8 is no longer able to activate on PSN. It simply gives a 80109D24 error while activating. The only way to fix it is to restore a NAND backup made BEFORE the IDStorage changes, then everything is fine.
My best guess is something is wrong with the way DCv8 generates the region IDStorage key, and Sony can see the difference when you try to activate. It's possible that a donor region key from a PSP of the same region and has the same motherboard could be used if a NAND dump isn't available, but I'm not a PSP dev and don't know enough to say for sure.
I would do more testing on this, but the 1000 I was using to poke around is no longer able to activate even with the correct IDStorage, something to do with too many de/reactivations in a row (which is a bunch of crap if you ask me...).
The point is, ALWAYS make a NAND dump before doing anything to your IDStorage, even if your using DCv8.