So after my P3 ADV hit a tree and broke up the gimbal i replaced the ribbon cable and one of the arms but gimbal was limp and no fpv so eventually i bought a new gimbal main-board and replaced the old one but still no change, it just blinks green fast and takes along time to shut down which i have been told means amberalla isn't booting? I don't know if i got sent a bad board or is there some thing else wrong. The ribbon cable was genuine DJI also. All the grey cables seem good so i really don't know what to do it's getting frustrating any help would be appreciated.