Gaming Prometheus Iso Loader doesn't boot old games on my PSP

[Deniii]

I've been using Prometheus Iso Loader for loading ISOs and it works great with new games but with old ones, like Metal Gear Acid, Breath of Fire 3, Wipeout Pure and Adventure Player among others, the PSP crashes while booting the ISO.
I tried with NP9660 and M33 drivers but the result is always the same: old games won't load and crash the PSP.

Does anyone know a way to fix this or at least why does it happen?

Thanks.

 

[ut2k4master]

i dont have those games so i cant test it on my psp, but have you tried dridri's openidea iso loader? maybe it works with that

 

[Rydian]

Use 6.20 TN-B (released last night).

 

[Deniii]

Thanks for the replies.

@ut2k4master: Openidea load the games but when I want to save the progress, the PSP crashes at the save screen.

@Rydian: I tried using 6.20 TN-B but it doesn't work either.

Any ideas?

 

[Rydian]

http://wololo.net/talk/viewtopic.php?f=17&t=933
The only one listed there is "wipeout 1", and that's the EU version, so see if that works.