Change USA Zone Maps offline START 50

VMX1200 Registered Users Posts: 7
Apprentice Traveler
Hi all
I have a Start 50 with lifetime USA maps which I use for holidays, the USA map is now too big for the device so is installed in Zones, my problem is I need more than one zone for a "road trip" and want to know if it is possible to download the zonal maps to a laptop and update without having to try and find a wifi hotspot which isn't ideal especially as the process takes so long

Thanks and apologies if this has already been addressed