A don't understand something on my psp

Question

can u do do 2 player if 1 person has a game and the other doesn't and if you can how do u do it

Answer 1

no, u can't due to both have to have the same game

Answer 2

psp tried to make game sharing work but that almost never works

what i do is turn the game on on one psp and go to the multi player menu and create a game

then take out the game and put it into the other psp and join the already created game

this works with most games but some you need two UMDs