This was a terrible fake from japan. "beta" versions 001 and 002 were corrupt when added to MS...but if you extract straight from rar ot ms with folder, it ran...but said it wanted 630.pbp instead of 620.pbp...upon changing the name it just flashed the memorystick endlessly saying it was checking pbp file...after 30 minutes I quit and still had no 6.20cfw.
now a 003 version has been found and magixien has spent some time inspecting what it does.