Nothing is going to stop these hackers, but Sony doesn't care. They are pumping out firmware like it's nothing and are now up to 3.56. This "security patch" is an attempt to keep hackers from executing unsigned code that allows homebrew programs to run, as well as pirated games and online games to be backed.
But, the new firmware was unpacked within hours but may be a little while away before the firmware is completely cracked. Those who are running hacked firmware are obviously being told not to update. Sony are continuing to keep people out of their system but the hackers are persistant. No one really wins from this and console sales from hacked systems can show that companies can still make money.