Unable to update 10.4 in my Apple Watch 10.4 over 50% of preparing stage

I have been trying to update my watch, Series 6, for the last few hours. The

update successfully downloads, but when it reaches a little over 50% of the “preparing

stage” no further progress is made. I am currently on my sixth attempt of

updating my watch, and for the sixth time, the update stopped during the “preparing”

stage.

I have tried to following: 1) deleted the update file “watchOS 10.4” and

restarted the update. 2) Performed a “hard restart” on my iphone 13 pro,

deleted the “watchOS 10.4” file. 3) Performed a hard reset on the iwatch.

All these attempts failed, so if anyone has a suggestion to overcome this annoying

issue, it would be welcome.

[Re-Titled by Moderator]