The software allows you to add cameras to manage and view their live stream in the main interface and that's it. To actually change the details, you will have to connect to the cameras individually using their IP or their connection protocols to change the password and then add them to the Blue Iris.
This procedure applies to almost any CCTV camera that features an interface to change its settings.
The answer to the question is that there are no free versions of Blue Iris for Windows.
The software allows you to add cameras to manage and view their live stream in the main interface and that's it. To actually change the details, you will have to connect to the cameras individually using their IP or their connection protocols to change the password and then add them to the Blue Iris.
This procedure applies to almost any CCTV camera that features an interface to change its settings.