Apple watch updates normally travel from the phone to the watch over Bluetooth. But, when turning off Bluetooth and using Wi-Fi, it dramatically speeds up that travel time. Apple could easily do this during an update when the watch is on the charger. But they don’t. Why?
Article on how to manually speed up an update,
http://www.idownloadblog.com/2018/04/23/apple-watch-how-to-speed-up-watchos-updates/
Article on how to manually speed up an update,
http://www.idownloadblog.com/2018/04/23/apple-watch-how-to-speed-up-watchos-updates/