Sorry to hijack the thread, but I've been having the same "No Signal" issue after updating to V01.06.00.40. I can move the gimbal / camera around with the Tx but no video. It also says the aircraft / gimbal / battery needs firmware update. Tried to downgrade to previous versions but the app says the gimbal is disconnected, so I'm guessing that's why it won't upload the firmware.
Tried pretty much everything. I'll check the connectors as a last resort, if it doesn't work I'll buy a new gimbal hoping that will fix it.