So guys, in case someone still have problems with making PSO1&2 or PSO1&2+ working on dios mios, after some research and some testing, i finally made both work without fail, here is what oyu have to do.
1. Open the Gamecube Iso Tool
2. Go on Preferences, select the tab Iso
3. At the alignment option, select 32k and click ok
4. Select extract with the GCReEx format
5. Put the folder on your usb drive
6. At your usb loader, disable the padhook option and put DM video mode on Auto (both gotta be done or you get error screen or black screen
7. Enjoy your game