Whats the error?  If error 10 (i think) its already at that version

Did it use to work, are you a newer model of 500?  Newer (last year at least) did not need adaptor

Does anyone have any advice on how to get the iphone adaptor working?

What does it do when you plug it in? Does the phone bleep and start charging or nothing? What happens when you plug it in while it is playing a song in iTunes? There was a problem that could be solved by resetting your network settings, but it used to start playing and then cut out.

What you really need is someone with a working iPhone and adaptor to try in your car/try yours in their car.

Paula

Nothing happens at all when I plug in the phone, it doesn't charge and the car doesn't recognise it.

Looking at the instructions, it say USB ERROR 10, it could be due to my having Blue & Me Nav:

ERROR USB 10
With a voice message that informs the interruption of the update procedure. The error, and
its display message, could pop up in different moments of the update and for different
reasons.
See the table below for further informations:
Cause Solution
1 The vehicle has a Blue&MeTM Nav Update unavailable
2 The vehicle is an Alfa Romeo 147 o GT Update unavailable
3 The USB stick has been removed before the update end

Repeat the procedure waiting the end of
the update process
If this guide hasn’t been useful you could always refer to the Customer Care.Does anyone with B&M Nav use an iphone adaptor successfully?