Apple today released watchOS 9.3.1 to the public. The update brings bug fixes and important security updates to Apple Watch Series 4 and later. The software comes three weeks after the launch of watchOS 9.3.
watchOS 9.3 can be downloaded for free through the dedicated Apple Watch app on the iPhone by going to “General” -> “Software Update.” The Apple Watch needs to have at least a 50% battery charge, needs to be on a charger, and needs to be in the range of the iPhone.
Apple’s release notes say watchOS 9.3.1 adds “bug fixes and important security updates” to the Apple Watch.