Upgrading AVAMAR Singlenode to 7.3 SP1

Hi,

I'm trying to update my two single avamar nodes to latest release 7.3 SP1 from 7.3. As I understand the procedure, I have to download the appropriate .avp file with AVI-Webinterface and then install the upgrade trough the interface. Unfortunately the download stops at 49% and the there will be no more progress. I also did a single download and tried to upload to repository but then the server says that he rejects the package with the note: " Avamar system - AvInstaller version does not match the package version". Any idea what to do and how to fix this so that I can upgrade to 7.3 SP1?

Best regress,

Frank