Just wondered if anyone else had 'bricked' thier 360 after installing the update on some of the current games (Tom Clanceys HAWK did me!)

The system dashboard change worked for about a week and now I just get the 3 flashing red rings on the front panel, can't even boot into dashboard to try the soft reset methods

Anyone else have this? is their a solution? I think I'm still within the 3 year warranty period but have a 'modification' so don't know where to go next!

Any help please?