Apple recently released a new beta version of their WatchOS operating system for Apple Watch, WatchOS 2.
This system has, of course, some issues. There’s a reason if it’s a beta, after all!
However, downgrading from WatchOS 2 Beta 1 to an earlier version of WatchOS is not really straightforward as it’s with iOS.
If you have a backup of your Apple Watch made with an earlier version of WatchOS, like 1 or 1.0.1, you can downgrade. Backups are automatically created when you unpair your Watch or before initializing it.
If you do, you can downgrade your Apple Watch following these instructions:
On your Watch, go to Settings > General > Reset > Erase all contents and settings
Let it restore for a while. If it seems stuck with a black screen and pressing keys does nothing, keep pressed power and the digital crown to force a reboot
Connect your Apple Watch to your iPhone (iOS 9 is required at this time)
Restore your backup that features WatchOS 1 or WatchOS 1.0.1
(Optional) Now you can also downgrade iOS 9 to the official version!
UPDATE: it seems like this method does not downgrade the Watch.
OS X Mavericks has just been released… for free. That means you can get it from the App Store and install it, as long as you already have OS X installed. So, even if you’re running an hackintosh, you can download it from the App Store and avoid looking for it somewhere else. But if you try to install it, you’ll find out that it just doesn’t work. It prepares for installation, then reboots on your old system as usual.
This guide will show you how I upgraded my iAtkos ML2 installation to 10.9 Mavericks using vanilla system files. You’ll need a spare USB drive (at least 8Gb). Installing from USB is easier, faster and cheaper (you don’t have to buy a DL-DVD for a one-time use).