I ran this command in terminal that I found on here and it has led to my macbook laptop becoming very slow. It has now resulted in the system continually hanging.
sudo mkdir -p /Library/Preferences/FeatureFlags/Domain
sudo /usr/libexec/PlistBuddy -c "Add 'redesigned_text_cursor:Enabled' bool false" /Library/Preferences/FeatureFlags/Domain/UIKit.plist
How can I undo this?
Try the following:
Then restart your Mac. I'm not sure this will work...