If the file already exists, it will be over-written, so you’ll get an “Are-you-Sure?” pop-up. What you are creating is a file called, gmappsupp.img Select all of the regions by right-clicking outside the map, hold the right-button, and drag to select all regions. Let’s install an additional map, Colorado Topo Map, on the USB drive. You will need a 4GB+ SD card formatted to Fat32. We’re experimenting on the USB drive, not on the actual Nuvi GPS unit. You need Hack #1 to use this install method. You can have up to two supplemental maps on the Nuvi. HACK #2 – Installing Additional Maps on Nuvi You can now install up to two additional supplementary maps. Taadah!Īn added benefit is that the Nuvi has a limited amount of on-board memory. Now, BaseCamp should recognize the USB as the Nuvi 265W on the left side pane in the program. Copy the Garmin directory from the Nuvi and put it on the USB drive.Put the autorun.inf file in the root directory of the USB drive.In a text editor, create the file autorun.inf and add these four lines and save:.You will need a 4GB+ USB stick formatted to Fat32. Amazingly, there is a super-simple hack that speeds up things considerably. When the Nuvi is connected to the PC, you get the map in BaseCamp. HACK #1 – Running a USB Drive as the Nuvi There are no guarantees, expressed or implied. You might get hit by a minivan crossing the street while staring at your GPS.
I’m going to save you the long, sad story on the intermediate steps and get right to it.ĭisclaimer: You might break something. So, now I have a Colorado Topo Map on my PC. I’m running 64B Win7 and had to install a starter map first. I picked up a topography map of the state of Colorado. The site, GPSFileDepot, has lots of excellent user-made maps. While I was poking around, I found that there is a new and improved PC-based mapping program from Garmin, BaseMap (free). To start, I planned to reinstall my old Garmin PC software, MapSource, which needed the original with serial to install. I keep on getting notices that my maps are old and that I should update them since the one on the system is from around time of Columbus and there have been significant changes. I haven’t played with my GPS in a couple of years.
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