Best way to upgrade 65 sp2 sp3

Just curious on whether this is the best way to upgrade all my 65SP2 server
to SP3

Option 1

Use NWConfig to install SP3

Install nw65os3a.exe

Install n65nss3a.exe

Install iManager from Sp3 Overlay disk using X Windows

Are there any other updates I should install?

Or a better way to update?