Just had another read.Not advisable to upgrade or update.So looks like a fresh install may be needed.
Either that or wait until they update it.
I wonder if it creates your e-mail messages and address book like normal updates do.
Alienware 17 R4 2017 review
These brilliant Lego posters show just what children's imaginations are capable of
Mac power user tips and hidden tricks
Comment réinitialiser votre PC, ordinateur portable ou tablette Windows ?