satnav upgrade for M3

[mdrc]

Does anyone know where I can access a SATNAV upgrade for my 04 M3 at a cheaper price than the £175 quoted by my dealer? The current (only 1 year old!!!) system has loads of roads missing and doesn't do postcodes. It seems a ridiculous amount of money to pay to upgrade - Windows XP is less than £100!!

[DennisTheMenace]

Try and find someone with the latest cd and burn a "test" copy on your pc