Apple has began the rollout of watchOS 8.4, bringing fixing a bug from the watchOS 8.3 update which prevented some chargers from working properly.
For many users, third-party chargers would refuse to charge an Apple Watch Series 7, and some others reported problems where the charger would appear to work normally, and then quit working after a few minutes.
Apart from that, watchOS 8.4 doesn’t bring any new features, focusing on improving the overall watchOS 8 experience and useability .
watchOS 8.4 can be downloaded for free through the Apple Watch app on the iPhone by going to “General” -> “Software Update.” The Apple Watch needs to have at least 50% battery charge, needs to be on a charger, and needs to be in the range of the iPhone.