Firmware upgrade brokes watch

My son owns a FitBit Charge. In December he received a notification that he needs to upgrade the firmware on the watch. We always do upgrades once we receive notification.

We started the firmware upgrade and about 50% into the upgrade, it seems to have stopped. We left it like that to run overnight, but the next morning the same progress bar with 50% complete was all that was visible.

I did some research on the internet, and it seems like I was not the only person who got this problem. The only options discussed was to do a reset or hard reset. This did not help.

I took the watch to DisChem where I bought the watch and they send it oversees to fix. Watch came back from FitBit and the feedback is that they are sorry about the problem, but there is nothing they can do about it. It is now my problem. So, I have a watch stuck with a progress bar on the display because I did a firmware update. And that is my problem.