I have used macOS sierra since the beta 1, it was really bad for my macbook pro then i had to downgrade later on and get back to OS X El capitan. Then when the beta 2 was out, then it was bugs fixed and improved and it worked like a charm. if you don’t like macOS Sierra then you can also downgrade your mac to El capitan / Yosemite here >
macOS Sierra beta 3 is better than the beta 2. It’s faster, smoother and amazing. if you want then also you can download the macOS Sierra beta and install it on your macs. But it’s released for developers so if you are interested to use it then you can register your mac UDID to Apple Developer Account here > for $15 usd only and it will be registered for 1 year and you will be able to update any upcoming macOS beta releases.
Apple has also released the iOS 10 beta 3, tvOS 10 beta 3, and WatchOS 3 beta 3. All of them are improved and great. Apple is bring lots of new changes in the beta and everyone is loving all the new features. if you want to use iOS 10 beta 3, watchOS 3 beta 3 then you can register your iPhone/iPad/Apple Watch UDID to Apple Developer Account here > and update your devices to the latest beta right away now.
if you have already updated you mac to macOS Sierra beta, then you can open up the App Store app on your mac and go to updates and you will see that Beta 3 is available for update. then just do the system update and you will be in beta 3 from the beta 1 or beta 2.
Testing macOS Sierra currently requires a promo code for registered developers that you redeem through the Mac App Store or you can download macOS Sierra beta 3 from iAppleStuffs website download sectionIf you’re already testing macOS Sierra, you should see the updated version in the Updates section on your Mac. If you’re just jumping in to macOS Sierra testing with beta 3, head to Apple’s developer page to find the promo code associated with your account.
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