We currently offer the Humminbird Basemap as a software update you can download off of the website here: https://www.humminbird.com/support/software-updates#MAPPING
We also offer a purchasable SD card that will have the necessary software update for your unit as well as the Basemap. You can find the SD card by following the following link:
https://humminbird.johnsonoutdoors.com/mapping/helix-vx-basemap
