Some psx questions...

[theoritikos_gr]

Hello guys! This is my first post here, and I have some questions to ask:

1. A friend has a modded pal psone, which has some kinda strange benavior.
It can't read original psx disks, only back-ups, and again to boot a backup from another region, you need a bootdsik or x-ploder 9000 in order to boot it! Do you think that it might be a problematic modchip? I don't know which one it has.

2. I have made a backup copy of the ntsc version of Final Fantasy IX. I discovered that the first disc had some problems with the FMVs. I don't know if the same is happening with the other 3 discs. Do you know a way that I can check this, because it will take me a long time until I reach that point in the game where I have to swap discs...

Thank you for your attention!