I just received my replacement P3A. It is currently on firmware 1.4.10+. The last P3A I had was on 1.6. and both batteries were updated to 1.6 as well. For the time being, I am planning to leave the firmware at 1.4 as suggested by many forum members. What should I do about the batteries? I have 1 Battery at 1.6, and a new battery that requires an update. Do I put firmware 1.4 on the card and update the 2nd battery to that and then have 2 batteries with different firmware? Will this cause any problems? All firmware are as follows: P3A - 1.4.10+ RC - 1.5.70 DJI Go - 2.6.0 Thanks.