Apple watch 3 won't update to watchOS 4.3

If the update won't start, open the Apple Watch app on your iPhone, tap General > Usage > Software Update, then delete the update file. After you delete the file, try to download and install watchOS again.

My impression of the last update is that it was significantly slower than previous releases. I suspect this is overloaded servers getting hit by increasing millions of watch users so you need to try to launch the upgrade at a time when most users are sleeping. The steps in the help doc linked above might help, but for a guess try launching the update before your region wakes or very late at night when there will be least competition for bandwidth.

Hey! I’m sorry to everyone having this horrible issue with their apple watches. As many of you have replied, thank you for your contributions to this post.

I might have found the fix, and I’m hoping that my method works for many of you!

Here is a Step-By-Step tutorial on how I made mine work.

1) Force Reset Apple Watch. (If you are setting up for the first time, hold down the circle button and press Reset Apple Watch upon pop-up)

2) DELETE the Watch App from your Apple device.

3) Disconnect from your connected Wi-Fi network completely and RESTART your iPhone, ETC.

4) Power on the device in which you want to connect your Apple Watch, connect to Wi-Fi network and download the Watch app again from the App Store.

5) DO NOT SCAN APPLE IR SCREEN, instead enter it manually (Press the “i” icon on the bottom left of Watch to find Pin)

6) Begin Update and THIS SHOULD WORK 100%

I hope this method works for you guys as I am one who was experiencing the frustration of updating an Apple Watch.

"restarting my iPhone 8"

Make sure your iPhone is up to date. It should be running version 11.3.

Settings > General > Software Update.

Have you tried using WiFi at a different location?

I have the same exact issue, the software just wont download. I am unsure of any fix at this point.....

Has this worked? Nobody has said this works. I’ve been failing to update for 2 days but if someone says this works I’ll try it