There seems to be a software issue that affects the original series watch.
[quote]I have the same problem. Wont pair, intermittent apple logo that occasionally fades into red & also a red exclamation logo screen.[/quote]
Never resets or boots. Cannot be detected by iphone to pair.
An Apple Genius tech in London simply rejected any repair as original watch is basically classified as obsolete.
Possibly if us civilians had the right hardware to access the hidden port & the files to debug the OS software/ firmware it would be a fix; but I see nothing on line to suggest anyone has got that far…