When I bricked my Vivifi by enabling bridged mode, I immediately realised the sensible thing to do would be to send it back for a service; with the right story they'd probably even send a straight-out replacement device.

Luckily for the internet, I am not and nor have I ever been sensible.

My first "hit" while researching a solution was this article: http://hackspot.net/iSpotBlog/?p=11