I haven't updated the Garmin OSM maps in a while as my effort has been very well superseded by other efforts around the world.
I initially started this project to raise a bit of interest in the Openstreetmap project around Australia. I hope I had some influence on what has become THE map data source for the world.
Even though I don't update these downloads any more, I'm still a great fan of OSM, and an active mapper. You should be too!
Put "OSM" and "Garmin" into a search engine and you will see many excellent (much better than what used to be here) efforts in making OSM available for your Garmin - including some routable ones that I can verify work very well.
Remember, many hands make light work - so get mapping!