Turn off your antivirus. Then connect your TomTom via USB to your PC.
Make a backup of your device to a folder!!!
Then delete everything from the device.
Then copy the extracted Navcore to TomTom. Then copy the latest map
TomTom United Kingdom and Republic of Ireland 1155 12878.zip
[Please Register or Login to download file] ... 4-mb.html/
This map has Metacodes, which are already included in the keygen
Download the keygen here
[Please Register or Login to download file] Unzip the keygen and copy it to disk and when you have copied Navcore and the map to TomTom
So run keygem maps, DTC and that's it. If it doesn't work, repeat the whole process, but with another Navcore, one will definitely work.
Keygen exe. run as administrator