While I sympathise with you and your frustration the problem is between the original owner and the middleman who sold the drone to you. It’s the same problem you’d have if you were to buy a second hand iPhone that had not been reset by the...
A couple of years ago, I flew the Air2S with 1/4" long screws attached to the sticks. For slow speed flights shooting video, it seemed a bit easier to make smooth control movements. For more dynamic flying, it wasn't as handy. It's a matter of...
Did you read the part of him wanting to do this for profit?
Did you read the subsequent discussion of what may happen when someone calls in a complaint?
You are attempting to cover multiple legal avenues with a common sense filter. That's fine...