With the transition from snom to Vodia, the 4.5 installers and update images also moved to the snomone website. With that move, new builds were made for Windows 32/64, CentOS32/64, Debian32/64, MacOS 10.6.3, and the snom ONE mini (SoHo). The new build fixes issues which are listed in http://wiki.snomone.com/index.php?title=Updates, which also explains the update procedure.