Is there a way to update Apple Watch software if the user doesn’t have an iPhone new enough to run iOS 17 or newer? My Dad is still using his iPhone X and it won’t run iOS 17.
You won’t want to - the watch will not pair with any device not on iOS 17 or later. So even if you updated it, the watch would no longer connect to the iPhone after the update completed. The only way to update the watch is to have it paired with a phone running the minimum version of iOS associated with the watchOS version (in this case, watchOS 10 requires that the paired iPhone have iOS 17). Otherwise the watch and watch app will protect you from updating so you won’t be in a situation where the iPhone iOS version is too old for the watchOS version.
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