I'm positive that doing the firmware update killed my signals, It happen to me twice. When the post came out about the chip being fried that totally made sense to me. It wasn't actually the firmware, it was the remote and Phantom to close together for to long and or probably a poor design, flaw with the chip.
As many posts I have read there has been a lot of P3S that this suddenly happens to. I do focus on P3S when I see a signal problem and it needs to be the remote signal to the Phantom.
I'm the only one that has ever posted what was repaired.
Terrible signal performance
I was also the first to post this problem.
Phantom 3-Std Weak Remote Signal
When I bought the P3S, it had only out about a week, the only place you could buy it was DJI.
I bought it in August, planning on searching for my lost P2V+. When this happen, I went back and look at flight logs, and discovered the time frame of the problem. I was pissed.
I finally got to use the P3S once to in October to look for the lost Phantom. I got one flight and it started raining. Once it snows it is June before you can back unless you have a snow machine.
Memorial day is always to early.
Rod