i want to install mwg 7.5 software version on mwg 4000B in order to receive updates and engine dats , 7.5 version require a minimum 8 GB of memory on mwg 4000B to work fine , can i install mwg 7.5 without ram upgrade and stop the antimalware engine ?? does that effect the performance ??
if you upgrade it is possible that you have performance issues and you will also not get support if you are facing issues as you are running an unsupported setup. So I would recommend to upgrade the RAM and then do an update.