I've just updated my WinCE type Nav running 7.910 Navcore to use the latest UK maps and I've also followed the instructions to put the latest postcodes file on there, ('zip' file in the root of the SDcard).
How can I tell whether the updated postcodes have taken effect ? I tried searching for postcodes of new housing estates to see if they were in there, but it's not proving conclusive !
Cheers !