watchOS 26 public beta 4 update is now available for download on Apple Watch. Go ahead and install it right away.

You Can Now Download watchOS 26 Public Beta 4 on Apple Watch with New Blood Oxygen Feature in the United States

Apple released the developer beta 7 of watchOS 26 just now, and now the same build is available for public beta testers as well.

If you are currently running public beta 3 of watchOS 26 on your Apple Watch, here’s what you have to do in order to install public beta 4: launch the Watch app on iPhone, go to General > Software Update, tap on Update Now.

The download will begin immediately and the installation will start a few minutes later.

You can test out the public beta of watchOS 26 on your Apple Watch by simply following the tutorial posted here. However, since we are so close to the final release of the software, I will suggest holding back for a while.

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Last Update: August 18, 2025