How did this happen ? Did you try to go into travel mode with the camera attached ? Or did you update the RC before the Aircraft by any chance ? give some details
If you did update the RC before the Aircraft and then this happened you will need to rollback the RC to the Previous FW , then get out of travel mode , then start over .
It's been sitting for a year unused. I took it out and tried to update but could not get it out of travel mode. I did try to connect the camera and placed the drone on risers so it would fit. Nothing. So after a good flying, it sat for about a year and now will not exit travel mode. I didn't update anything. Just stored in case.