Kids syncup won't turn on

Same issue, watch won't charge on the dock. Did basic trouble shooting, cleaned pins, different cord, different outlet, hard reset, nothing works. The only thing the watch does when I try the hard reset is that it vibrates and says low battery. I saw on another forum that this happened after a software update was pushed, and the watch needs to be turned off manually before charging. Now I can't even do that due to being blocked by the low battery screen. Unfortunately, I found this out after ordering a new $30 charging dock, that I am sure won't work due to finding this information. After I confirm, I intend on contacting T-Mobile and trying to work out a warranty. This watch is only a couple of months and was working fine, to be possibly bricked by an update and causing my kid to be distressed at losing communication with his deployed mother has me ready to move to another carrier if they don't play ball.