Firmware wyze cam v2

I am having a problem loading rtsp on a wyze cam 2. Have followed the directions from there web site.
I insert the sd card with renamed file and try to reset as per instructions. I get a message that the camera wants to reconnect. The camera is already on my phone. Loaded latest firmware 4.28.4.49 on sd with same results. Have tried loading standard firmware and it works find. Go to load rtsp and it still wants to reconnect with phone. Any thoughts on how operator error is involved?
Thanks