You can now download and install watchOS 26.1 developer beta 4 on Apple Watch with build number 23S5031a.
watchOS 26.1 Beta 4 Released for Apple Watch, Download it Now
It’s beta day, folks. If you’ve been testing out watchOS 26.1 beta 3 on your Apple Watch since last week, then you can download beta 4 right now on it with bug fixes and other performance improvements.
Assuming you do have the beta installed on your Apple Watch, you can download the new update by going to Watch > General > Software Update on your iPhone. Tap on Download and Install to initiate the update process.
Public beta 4 of watchOS 26.1 will likely become available for download tomorrow, so you have to wait a while longer if you’re currently testing the public beta rather than the developer beta.
