Play PS3 Games from USB flash drive?

Is it possible? I have only 40 GB HDD on PS3.
Answer #1
I’m pretty sure you need to hack the ps3 first before you can play games from a USB.
Answer #2
jailbreak it and you should be able to
Answer #3
I have hacked PS3 with 4.40.
Just copy game to USB flash drive in folder Games and run it on PS3 like from HDD?