Probably should have well enough alone but I tried to update firmware on one of my 2864-222 HD wifi cameras. (revision 4.0)
Using Chrome web browser on Windows 10 PC, I followed the instructions on https://www.insteon.com/support-knowledgebase/2015/5/12/update-your-hd-wifi-camera-system-firmware and all was going well until the "Click system upgrade" never seemed to finish and give me a status. Had to re-discover the camera using the IP Camera Tool but could not login using the default admin and blank password. I would just get the spinning "loading" circle then the screen would revert back to the login screen.