I got a second-hand Generation 0 SS Apple Watch. Checked with Apple to make sure it is not Activation Locked. Seller reset the watch but is not tech savvy to know what WatchOS version is running on the watch. I tried to pair with my older iPhone runing iOS 9.x and my newer iPhone running iOS 10.x. I have no iPhone running iOS 11. I cannot to upgrade to iOS 11 at this moment as I have essential apps needing to run on older iOS. When I tried to pair the Watch, it reports the message that my iPhone's iOS out of date and must first be updated. I tried to manually pair with a code. It generated and accepted the codes on both devices, but the same error message appeared afterward. I searched on this forum and found posts describing similar but not exact situations. Am I truly stuck? Is there anyway to check the watchOS version without finding a compatible iPhone to pair it first? Is it possible to downgrade to WatchOS (I read somewhere that it is not, but I am not sure)? Can I borrow a friend's iPhone running iOS 11 and pair it with the Apple Watch to finish the setup (at least), then un-pair the Apple Watch and simply use the watch in isolation (at least I can use it to track time, health data, etc.) until my own iPhone is updated to iOS 11? At that time, can I re-pair the watch to my phone without losing any local data stored on the phone? Very confused... Please help!