CA UIM (Nimsoft) Support Website:http://support.nimsoft.com
If you have access to and a login for http://support.nimsoft.com you can download UIM (Nimsoft) packages/probes from there. If so, click Login and enter your username and password, then click on the 'Remember Me' option, and then click the Login button.
You will find the software you need under the Downloads Tab/section.CA Support Websitehttp://support.ca.com
You can also find the downloads here in the CA customer support center->Downloads. https://support.ca.com/us/download-center.html?r=1
The site is organized quite differently so it may be a bit harder to find/navigate, but the software and probe downloads are there as well.Probe Downloads
Filter by the product release and you will see the packages, e.g.,
CA UNIFIED INFRASTRUCTURE MANAGEMENT R8.51 SP1