Lost Spark ...and FOUND it thanks to this forum contributors!

Side note, given the files provided any way for you to tell me when this bird took to the sky the first time ??

There is a field in the .txt labelled DETAILS.activeTimeStamp. It’s value is 11/4/2018 7:50:42 PM . That could be the date/time when the Spark was activated. Just guessing.

Thank you for your precious help…I certainly will keep Thunderdrones on bookmarks .

11/04/2018…if I am correct it would means November 4 2018…which checks with the documents I have been provided. I think I will ring a bell to the vendor or DJI see what they say.