Latest maps on Lexus CT MoveOn Navi SD card

LindaMattijssen Registered Users Posts: 1
Apprentice Seeker
edited December 2020 in Built in car navigation
I have already bought a SD card (8GB) and paid for the latest maps on TomTom. But now there seems no way that i can put the most rescent maps on the SD card... How can i make this work? it keeps on asking for a device.
Lexus dealer cannot help us because this navigation device is designed for Lexus but is not original from dealer.
Please help me out!