It's the M33 Custom Firmware. You can find out which version it is by going to the far left menu and choosing System Information from one of the settings things.
As for the 3000... I don't know if it's been cracked yet. The 2000 was hard enough - there are still certain things you can't do with the slim that you can with the phat (such as running 1.5 FW natively), although thanks to it's extra memory there are some M33 kernel modules which can do extra things.