You could get the wetsuit from Phantomrain for it. Then you can fly in rain/snow without issue. They've been around a long time and have many good reviews. I haven't seen any post from them lately, but they used to be quite active on here.
Most semiautomatic handguns have a 3 to 5 inch barrel and wouldn't get within 5 feet at 250 ft away. It must have just been a luck shot (or unlucky in your case) that he hit it at all. That said, shooting at any aircraft is highly illegal and not...
I don't how high you were, but Wow, if he was able to hit a drone in in the air at some distance that was a pretty good shot. Most folks couldn't hit a drone at 30 feet with a handgun.
You haven't said what you are doing, so the obvious thing to check first is that you are doing it properly.
From your manual ....
Powering On/Off
Press the power button once and then press again and hold for two seconds to power the battery on or...
What's supposed to be the advantage to the update. I normally update when available, but with go4 and the age of the supported drones I'm leery about trying it, especially since everything is working fine the last time I used it. So just cerious...