The thing is, I'm trying to get Daxter (ISO, I know the UMD doesn't work yet) to work on my 1.5, the problem is that I have to use either of those programs and they don't work.
I've tried everything! I've tried few different releases, few different firmware dumps and bla bla bla.. this is getting annoying. Btw, those programs don't work for any other game, not even my GTA UMD.

MPH just says "Starting game.." or something like that and nothing else, or if I remember right.. it just turns my PSP off (after it has been in the "Starting game.." state for a while)
RunUMD says something like "START ERROR".. don't remember what, only that it said in red letters something about an error. (Does RunUMD need anything else than just the files in the rar? the eboots? It doesn't come with a folder on the MP_ROOT like other loaders that require (sp?) flash0/1 files)

How can I get those programs to work?

For MPH I used a dump that I got with Devhook firmware installer (and yeah, btw, 2.00), that didn't work.
So I used some program in windows and then some homebrew to decrypt (?) the files? Then it was just a chaos of files and no folders.. that didn't work and.. I don't even remember, I tries two other dumps I think, and yes, they were all 2.0 dumps.

I have searched my ass off for info on this and found nothing, again, I searched alot for Daxter ISO and found nothing useful.. I found though that I need to load the ISO with UMD Emulator f.ex. and then use RunUMD or MPHGAMELOADER.
Could someone come with a step to step information on how to install and use mphgameloader?
Btw, I saw on some site that I could use the firmware installer that is with the MPH Firmware launcher for MPHGAMELOADER.. does that make any difference? I haven't tried that yet btw..

Well, I hope that someone under stands my thread and can help me.. Thank you.
And sorry if my english is hardly understood, I'm icelandic so..