Cannot see any new hot fixes present in the Symantec Installation Manager (SIM) at "Install hot fixes" and at "Upgrade installed products" options.
The default pl xml is not selected under the settings of the SIM.
Symantec Installation Manager 7.x and 8.x.
Change the pl.xml file to the default "symantec_v2.pl.xml.zip" file to fix the issue. To download the "symantec_v2.pl.xml.zip" file, refer to the steps given in INFO4335