Thread: dnx-572bh

Theres also a method of disassembling the radio to get access to the internal SD card. You need a couple of software programs to uncover hidden partitions on the SD card where the garmin files are. You then copy the contents to a new SD card, update the map with an unlocked map image. The downside to this is that you need to get access to the card to perform an update. You should be able to get one of those wireless SD cards that you can connect to a tablet, phone or laptop over the wifi connection and use this to update the map files.

what software programs?