I want to roll back this new useless update. Where can I get the old one?
Depends on which camera model:
https://www.wyzecam.com/forums/topic/flashing-your-wyzecam-pan-firmware/
https://www.wyzecam.com/forums/topic/flashing-your-wyzecam-v2-firmware/
https://www.wyzecam.com/forums/topic/flashing-your-wyzecam-v1-firmware/