My Apple Watch ultra 49mm will not update. I have done. All the steps necessary numerous times.

• Is the watch on it's charger?
• Is your iPhone updated to the most current iOS 16.3?
• Are you connected to Wifi?
• Are you downloading the update to your watch using your iPhone or over the air directly on the watch? If directly on the watch, try using your iPhone to update using the Watch App on your iPhone.

Try to restart both your iPhone and Watch and see if that corrects the issue.

Contact Apple Support for direct guidance.

If you are in the US, you can call them at 800-MY-APPLE

Without knowing any of the steps you've tried, see if anything in this link helps --> Update your Apple Watch - Apple Support

You're welcome. I'm sure Apple will get this sorted for you.