I wanted to test out iOS 9 and watchOS 2. I mostly did this because I wanted to test out the new custom complications feature available to developers in watchOS 2, and as far as I know, this is not possible in the watchOS simulator still. Neither iOS 9 or watchOS 2 was stable enough to develop on.
I downgraded my iPhone 5S and iPad Air to iOS 8.3 no problem. I cannot downgrade my Apple Watch 42mm Black Sport to WatchKit 1.0.1 (I think that was the version of it, it was the first official update to the Apple Watch).
Right now, it seems that until I put iOS 9 back on my iPhone 5S, I cannot use my Apple Watch, because I cannot pair with it using iOS 8.3. I have looked everywhere and no one seems to have a solution to this.
Can I go to the Apple Store and get my Apple Watch reset with that "hidden" debug port underneath the removeable strap?
I need to get my Apple Watch functioning again ASAP.
P.S. watchOS 2 beta was especially horrible for anything network-related. Same with iOS 9. Any network connectivity was insanely bad. At one point, I was attempting to downgrade my iPhone 5S running iOS 9 to iOS 8.3, but for some reason the iPhone 5S had activated Find My iPhone. This meant I could not restore using the conventional iTunes way until I disabled Find My iPhone. The only problem? I could never get my iPhone 5S (neither on a strong WiFi or LTE connection in multiple areas) to connect to Apple's iCloud service to accept turning off Find My iPhone. So then I had to restore my iPhone using "DFU" mode. Another thing, I couldn't find a copy of iOS 8.3 that was hosted on an official Apple website. I believe on the old developer website, there was always a copy of iOS you could download that was current and active. I had to resort to going to some sketchy third party site to download iOS 8.3. I'm assuming it worked, because it validated the install with Apple (I think?)