I'm wondering if there are any Garmin head units (thinking the new Edge 530 specifically) onto which you could download a course without a computer. I'm about to embark on a bicycle tour and if I end up deciding to change my route during the tour, I want to know if there's a way for me to get a new route (made on Google Maps or Ride w GPS on my phone) onto my Garmin?
Thanks for your help!