Should I Get SP3 From Windows Update Site Or Automatic Systray Icon?

I was on my pc yesterday and a small pop up appeared in my systray telling me that SP3 was ready to download and install. I didn't choose to install it for nearly 2 hours because I was busy with some other work. When I finally decided to click "download" to the installer pop up, it just fully closed itself and disappeared. & now when I go to the Windows Update site it shows up there as an available download for my pc because I obviously never got it.

My question is it ok for me to do it through the Windows Update site or should I wait and see if the Systray Pop Up Icon comes up again telling me to get it from there? I don't know if theres any difference in the site version and the systray notification version.


- Thanks

 

same file same thing basiculy, either way.