We have some third party applications that need to be updated and we're
wondering whether we can use SUS to do this?
Contributed By:
Cliff Hobbs [MVP SMS]
At the moment you can't add your own or third party updates into SUS.
As to whether Microsoft will consider changing this who knows. For now
you'll have to stick to other software distribution methods such as emailing
out attachments, using the login script to copy the files out there, or good
old sneakernet.