Find some batteries if needed and turn it on.
Update???? Was it working well when parked????
Updates can always wait until some research has been accomplished.
Thats how I discharge..With the Air2s, DJI included a little adapter that fits on the battery and lets you plug a usb device into it. I charge my phone and anything else with them to get back down to 60.
Sure, If you’ve purchased a combo pack the hub can be used as a power source for other devices such as your cell phone iPad ect. Plug the cable with the usb side into the hub and press the button on the side and plug to other end to the phone...