“Unable to verify update” error message

If you've eliminated all the obvious stuff, here's your likely solution: before you initiate the Install stage (and this can be any time after pairing/registering for a new watch, or during the download, transfer, or preparation stages of the update), separate your phone and your watch by several meters, while staying on the same WiFi circuit, or turn off Bluetooth on your phone. The two devices will shift from communicating with each other via Bluetooth to communicating via WiFi, and that's the key to getting around this issue. At the crucial verification stage, if the watch is close enough to the phone to be able to connect to it via Bluetooth, it will do so and then generate the "unable to connect to the Internet" error. If it's not connected to your phone via Bluetooth, it will instead use WiFi to do the verification, and things will proceeds as you expect.

Hi daririus256,

Re: “Unable to verify update” error message

As nothing in Apple's "Related Article" above your question has helped solve the issue:

You may want to browse through another article online; this srticle is "user tips" about updating Apple Watch.

Although it was created in Dec. '22, perhaps something in the article (link below) may be helpful in finally updating.

Updating/upgrading Apple Watch - Apple Community

More support if needed:

You might want to reach out to the Apple Watch Support Team.

There is a "Get Support" link (scroll to the very bottom) on their webpage (link below)

Apple Watch - Official Apple Support

All the best :-)