Seeing as how we're OCS/MOC 2007 R2, that's not entirely helpful, and we have a couple of the phones that are brand new but with Lync firmware installed. According to info I found on several sites, once the phone has Lync firmware, it is not possible to downgrade the phone's firmware unless you have an operating Lync 2010 environment.I believe what you are seeing is the standard reboot process that is triggered when the phone updates the firmware. Any sign-out procedure will purge the user credentials, making it impossible to sign back in again. As far as I know it's not possible for LPE to automatically sign a user out and back in. I have already tried a soft reset, not sure how to progress.