Newbie drone owner here. I cannot attach the X5S to the M200 because the gimbal lock is stuck in "lock" mode without the X5S being attached.

Nevermind, I found a solution on a thread with a similar problem. Link: https://forum.dji.com/thread-106454-1-1.html

Ok, nice you have found it!

PS, if you ever have any other (DJI related) question, you might be better off posting your question in the 'products' section of this forum.
That is way more active.

lyndonali Posted at 9-21 00:34
Nevermind, I found a solution on a thread with a similar problem. Link: https://forum.dji.com/thread-106454-1-1.html

Cool - thanks for sharing