Nov 04, 2019
To get a pre-release
Pre-releases are distributed via the "preview" update channel, so getting one simply involves changing your channel and pulling down an update:
⦁ Make sure you are running 80.6 or newer
⦁ Hold Ctrl down, select Menu > Help > "Set update channel"
⦁ Enter "preview", click "Set"
⦁ Menu > Help > "Check for updates"
for a richly illustrated guide.
To go back to the mainstream version
⦁ Clear the channel name (set it to blank)
⦁ Check for updates
You will get a DOWNGRADE prompt showing the exact version you will be going back to. Do that.
On the first run after a downgrade you may see messages in the log referring to unrecognized configuration entries. This is normal.