How can I get my Apple Watch out of demo mode ?

Timbrown3 wrote:

How do I get my Apple Watch series 8 out of demo mode ?

As far as I know Demo mode is a custom software version and it should only be installed for in-store demonstrator models which are never sold to customers. My advice is to return the watch to wherever you purchased it, and get a refund.

Please also see KiltedTim's comments in How do I get my iWatch out of Demo Mode? - Apple Community

maybe How can I remove the demo mode from my Apple Watch? - Quora

more

Apple Watch series 8 out of demo mode - Google-