Update Mango Beta 2 to RTM without restoring to NODO

Apparently, it's possible to update your Windows 7 phone with the Mango Beta 2 installed to the RTM version of Mango without having to restore the NODO backup (and loosing all you have done since). Just update Zune to version 4.8, connect your phone and you will receive 2 updates. see http://forums.create.msdn.com/forums/t/92311.aspx