Can’t do it. The units will pair with my iPhone and iPad, but the ap doesn’t recognize any of my graphs or trolling motor. I have registered all of my equipment twice and it will not recognize them as well. I have read where other folks are updating software this way, and I would really like to be able to as well. I don’t have a computer, so an SD card is out of the question. I would really appreciate any help and guidance that I could get. I have both the Helix 10 mega side imaging and down imaging as well as the ultrex. Thanks guys.