Have an A3 Pro.  I've downgraded to firmware 1.0.5 from 1.0.6.  But also had to downgrade Assistant 2 software.  Now I can't read flight data.  There is a button for SD Card mode, but none for the app that reads the data.  Any idea where I can get my hands on that app?

Do you mean to say that you've downgraded the Assistant 2 software from 1.0.6 to 1.0.5? Just to clarifym what is the current firmware version for the A3 Pro? When you enter SD Card mode, are you able to see the .DAT files but cannot open them, or do they not show up at all? If it's the former, do you at least able to see older flights before you made the upgrade?