Sorry to tell you but my sat hacking days are over, just to let you know though that nag 3 has already been patially hacked that is from the card side.

It is however very similar indeed to the vc1 as in it changes keys internally and that means you only need to work out the algorithms being sent to the device.

Not sure of the speed of nag but vc1 was 8bit, so very slow in todays standards.

Sorry this is offtopic.