Release Update NB_6.5.4.winnt.x86.exe provides fixes to the Veritas NetBackup (tm) Enterprise Server / Server 6.5 on 32-bit Windows server and clients. It also contains fixes for NetBackup Add-on products and Database Agents.
http://support.veritas.com/docs/326385
List of links to the Veritas NetBackup (tm) Enterprise Server 6.5.4 Release Update downloads
http://support.veritas.com/docs/326270
Where are NetBackup 6.5 patch releases (release updates)?
http://support.veritas.com/docs/334222
This article contains information about upgrade requirements and the entire listing for all NetBackup Server, NetBackup Enterprise Server download lists available for 6.x and 6.x.x, including NetBackup Agents and Options.
http://support.veritas.com/docs/315276
As you can see, we're going to great lengths to keep you from having to navigate our Downloads page. ;)
http://www.symantec.com/business/support/downloads.jsp?pid=15143