The build number of watchOS 3.1.1 beta is 14S5862d.
Updating to watchOS 3.1.1 beta 1 is not supported on devices running watchOS 1.x. Be sure to
update your Apple Watch to watchOS 3.1 before installing watchOS 3.1.1 beta 1.
The build number of tvOS 10.1 beta is 14U5565b.
tvOS 10.1 includes bug fixes and improvements in the OS and SDK.
You can download the watchOS configuration profile and the tvOS restore image from the link below...