You can now download watchOS 4.2 for your Apple Watch, as Apple has just pushed out the update, which comes in as a 144MB download for Series 2 users. Apple says this update contains “new features, improvements, and bug fixes.”
This release is required for users in the United States looking to use Apple Pay Cash, the company’s person to person payments feature, which officially launched today.
You can install this update by launching the Apple Watch app on your iPhone, then going to:
General > Software Update > Download and install
Again, you will be required to have your watch connected to Wi-Fi and charged at least 50%.