I have the "Software Update" option turned on in the System settings screens on my Fenix 5x.
Twice now, across two versions of Connect (Android phone) I have caught Connect burning up ridiculous amounts of power on Bluetooth. When going into Connect it says it is "sending software update."
Except... there isn't one pending. There isn't one here, and there isn't one if I plug it into my computer and run Express.
It takes an hour, roughly, for the "update" it's "sending" to complete, and when it does complete there is no prompt to install anything on the watch either....
I shut off the "Software Update" option on the watch and the problem has disappeared -- but I'm not sure which end of the connection is "wrong." What I do know is that when it happens it murders my phone's battery....