Whats the deal with Topo 4.20D vs. Topo 3.00?
Topo 3.00, which shipped until around the summer of 2003, didn’t support direct writing of maps to SD cards used in Meridian, introduced in late 2001. Topo 4.20D adds the ability to write to SD cards (albeit with a single filename, so if you want more than one file on your SD card, you have to reach behind its back and rename it…) and a track editor. There is no difference in the maps. Magellan never really announced the upgrade and for the longest time was reported to have denied that it existed. The upgrade isn’t downloadable but must be ordered directly from Magellan. Oddly, people report costs for the upgrade varying from zero to $25 USD and some people have to return their original media and some do not.
