Downloading to GPS from iPad in How do I...? Posted September 3, 2012 · Edited September 3, 2012 by Borogove & Mimsy I guess the first hurdle will be whether your GPSr and ipad will know they are connected. The next issue is what GPSr you own, and what format do the files need to be in. Does it accept .gpx files? I think the problem here is that the iPad doesn't have a USB port. Therefore the GPS cannot communicate with it unfortunately. There is a USB adapter available for iPad. Assume a GPSr that will accept a gpx file, Like eTrex 20. How can I use iPad, either browser or Geocaching app, to put PQ into GPSr?