PSP running .iso's error

OK...i have recently "ripped" a few iso's to play on my hacked PSP - 1003... i have custom firmware 5.00 M33-6...i have compressed the .iso's into .cso's an i put them in the ISO folder at the root of my memory stick...i ripped...

Final Fantasy VII -Crisis Core (worked perfectly)

Tomb Raider Legend (error 80020148)

Test Drive Unlimited (error 80020148)

GTA Vice City Stories (error 80020148)

I have tried lots an lots of things to get these to work...i have tried different versions and had no luck...im not sure if its my custom firmware (5.00 M33-6) or if its my settings...if i need to enter a UMD i have one...so im going to show you my recovery settings so you can see where i have gone wrong...

Plugins----> all Disabled

Configuration---->

-Skip Sony logo (disabled)
-Hide corrupt icons (enabled)
-Game Folder Homebrew (1.50 kernal) "i do not have a 1.50 kernal though"
-Autorun program at /PSP/GAME/BOOT/EBOOT.PBP (disabled)
-UMD Mode (Sony NP9660 -NO UMD-)
-Fake Region (disabled)
-Use VshMenu (enabled)
-XMB Usb Device (Memory Stick)
-Use M33 network update (enabled)
-Hide PIC0.PNG and PIC1.PNG in game menu (disabled)
-Use version.txt (Enabled)
-Speed up MS access (NEVER)

Advanced----> Advanced configuration---->

-Plain modules in UMD/ISO (disabled)
-Execute BOOT.BIN in UMD/ISO (disabled)


those are all the main settings...i need so much help...if you are happily playing your "backups" on 5.00 M33-6 please tell me your settings...i have trie everything an nothing works...