I might have connected the battery of the controller in a reverse way.

So immediately, 1-2 seconds later, I could smell burning smell and see white smoke.

After that, the controller didn't work. Couldn't power it on.

What should I do?

(1) Is there any way that I can fix the controller?

(2) Or can I send it to flysky and ask "paid-repair" ? or is there any company doing this repair?

(3) Or as a last resort, if I have to order a new controller, is it possilbe to replace only the controller without ordering IRIS+ as one set? (Because I heard it needs "pairing" between copter and controller.)

Thank you so much.