I have the skyradar-L and 700. I 'm not technical enough to understand what the problem is, but they don't work well together. My first flight the Nextrad worked but the ifly was saying the data was 45 to 55min old. I don't think it was, but that is what was displayed. The text weather worked but I could not get any TAF's or Winds aloft. The next flight was a 2 hour trip. The nextrad didn't work and the text did, but still no TAF's or winds aloft. Then about 1/2 way through the flight everything started to act up and the Ifly eventually crashed. I rebooted several time and the Ifly would say "NO GPS Signal" and not track the flight. In the GPS status page it showed that it was tracking 12 satellites, but still displayed the NO GPS. Two days later I flew the return leg to that 2 hr trip and this time, everything worked perfectly. I had up to date Nextrad and Text weather, even the winds aloft. It worked flawlessly for the entire trip and was a great help as there was a fair amount of weather to navigate. I'll keep trying it, but won't expect much untill there is a fix.
The folks at Adventure Pilot are working on this issue and will probably have some sort of fix in a week or two.
Dan