Mk3 software update

[Typhoon190]

Hi guys.

Yesterday I finally got round to using the update disc I have.

All seemed to go well with the update , but now the screen just comes up with

' please insert key disc or version 17 '

I don't have anything other than the navteq disc which when inserted, doesn't change anything.

Is all still ok with my sat nav unit, and can someone help me find the next step please.

Cheers

Ben