Innuos 1.4.9 update available and 2.0 new info

Information on the status of the 2.0 update is available on the site.The 1.4.9 update has to be done first and has been available a few days.
Does anybody know what’s different (if anything) between the sound quality of version 1.4.9 vs 2.0 ?
I’m updating my Zenith mk3 to 1.4.9 (before going to 2.0) but I’m not sure it worked as now the Innuos server can’t be found on my network. Is it OK to turn off and on the Up the device using the physical button to reboot the server or will this screw up the update?