Wed Oct 29, 2008 1:32 am by Sypheran
maybe the MMS creation program you used doesn't like working on vista, some don't.
If you put in the normal battery, try to turn it on and hold R, does the recovery mode come up? If so, try to reformat your flash1. Don't know what caused it, but I once bricked my PSP when I tried to "mod" it after it was already modded. It only happened once and never again, but maybe the same thing happened.