Series 3 Apple Watch update problem (Possible Fix)
Apple Watch Series 3 wont update? Does it keep restarting and going back to the original update even when it says the updates complete?
Try this because after a year I figured it out and it finally worked.
-Unpair your watch and reset it
-Reset your watch on the the watch app also. (Bring it back to pairing mode)
((Side note if you cant unpair or dont know how. Go to icloud.com > Find My > Delete watch))
-Turn off low power mode
-Plug in phone to charger and put watch onto the charger
-On the iphone go to Setting > Display & Brightness > auto-lock > put “never”
-repair the watch and start the update
This method worked for me it was due to my phone just going dark. Leave ya screen on and keep it right next to your watch. Took 4 hours total to update because its been so long and be patient!
Hope this is useful for you, I was about to buy a new watch.