I am trying to update my AC, however, it wont initialize and start the update. Read through the forums none of the tips seems to be working. I wanted to try and just fly using an old firmware, but was wondering what RC and AC works best together? My AC and Camera shows 1.2 my RC shows 1.5 and its the lowest I could go using the DJI Go App. Amy recommendations would be most appreciated. Thanks in advance!