I've got a fair bit of experience creating routes in Open Captain (free chartplotter) and then exporting them to an SD card using Humminbird PC. I plug the SD into the unit, power it on and it imports the routes automatically. I di this on 1197C SI's multiple times, but it will not work on my brand new 899CI HD. If I upload a .HWR file could anyone diagnose? Any known issues with this unit?
Thanks in advance.
Jason