This may or may not be of any value to you, but I am able to download dataflash logs from my PixFalcon by radio using Dragonlink Advanced v3 talking Bluetooth to Mission Planner. This was pioneered by RCG user Noircogi on the DLAv3 thread on RCG. I am guessing you are using 3DR radios or something other than DLA. So maybe this is of no value to your situation. Though the ability to download wireless is tedious for me, and I have good USB and microSD card access on my PixFalcon, so I usually pop the memory card to download logs. Good luck.