10 Jul 2009
22 Apr 2013
Link to this post
I've done this same thing a few times in the last 2 weeks, in preparation for a final Sitefinity upgrade and website migration to an external host.
So, your question specifically: you can download both 5.2 and 5.4 project managers and their licenses. Since 5.4 is the latest version, place it at C:\Program Files\Telerik\Sitefinity 5.4.
Place the 5.2 manager right on the desktop. Once you're done with the upgrade, you can remove it.
I hope this helps.