It is important that the name of the file is correct. Here is a link provided by a Wyze employee:
Here is a snippet for the v3:
Download a specific version of firmware, For Windows 10: Right-click on the folder and select extract all. For Mac: Just drag and drop the folder, put it on the root directory of your microSD card. For both Mac and Windows, rename the file to demo_wcv3.bin
WIll try to see if I can find the RTSP Steps as well
EDIT
Here is a link for the RTSP, it is similar to what I mentioned above.