I was running ARK ecfw for a while and I had a lot of PSP ISOs on my memory card. I decided to update to 3.60 and install henkaku, but I didn't delete all my PSP files first. Now I don't know how to access or delete them. ms0 doesn't seem to be accessible by VitaShell, and content manager lists it as "other" files and doesn't let me modify it. Anyone have a solution?