Just a suggestion but I think it might be time to update the PSP Dumping guide and remove Daxdumper as the definitive tool to use to dump PSP games and add PSPFiler 5.9. It's been proven that Daxdumper produces bad dumps and through my experiences dumping PSP games with Daxdumper it underdumps and also has trouble dumping data in the last sector of the last file. PSPFiler however does not have these problems and always produces a good dump. Here is a link to PSPFiler 5.9 for those few PSP redumpers out there 
PSPFiler 5.9
http://www.mediafire.com/download.php?imenzyt2twg
BTW I made a post about how to check if a PSP dump is the proper size on the No-Intro forums for those that are interested here is the link http://forums.no-intro.org/viewtopic.php?f=2&t=1320