PS3 hacking questions

Okay, so I get that the playstation 3 is alot harder to hack on than your regular PC games. I have some questions about hacking on a PS3:

Would it be possible to simply transpose the coding, stick it on a flash drive and plug it into your playstation 3's USB and run a hack like that?

Can you manipulate the game so that it believes you did something lets say, 200 headshots or something in story mode. If you could manipulate the game\server to believe you have achieved this then you would be able to get all the trophies fairly easily?

I have no idea what I am talking about these are just some ideas. I think that there should be a sticked thread about specifics on hacking consoles, because most people probably have no idea about how to approach it.

Thanks