They are UMD disks.
No, they are too advanced for a regular PSP.
There are exactly 1,560 games on the PSP...
Nothing. The memory stick is for you and the PSP to store data on. All the PSP's system files, the firmware, is coded into its internal memory. You will need your PSP to format the stick, and after that it will be able to save games, or you could load music onto it for the PSP to play, etc.
No, they are too advanced for a regular PSP.
No the PSP plays PSP games. The PS2 and PS3 games would be too complex to run even if a PSP version was made it has to be made with less capabilities so the PSP can run the program
There are 500 games for the psp so far and counting
Are You Talking About The Games Or Other Things. If Games You Have To Make A Folder On The Root Of Psp Named "ISO". It Should Be In Capital Letters.
There is a emulator at http://www.emulator-zone.com/doc.php/psp/ you will need to have the game files on your computer. there may be a program that gets the games off your psp source : i found out about emulator zone on tinkernut.com
It's possible that the games you are downloading from PSP Blender are either incompatible with your PSP model or are not genuine copies, resulting in corrupted files when transferred. Try downloading games from a reputable source or ensuring compatibility with your specific PSP model to avoid corrupt files.
There are literally hundreds of great games for PSP
a great service for downloading PSP save files is to buy action replay max, it doenst cost that much, and you can get save files from people who beat the games you have. Or you can go and search them on the computer (maybe google) and download them (either in US or EU.) Then put them into your PSP via USB connector.