DO NOT UPDATE the firmware if you use a micro SD card. Newer firmware versions released since end of 2022 will cause you to lose SD card support. I speak from experience.
if you are noticing your camera(s) micro SD card system or functionality compromised in anyway…that is likely because of the new firmware.
Resolve this problem by BUYING NEW CAMERA on Amazon, replace your camera(s) with same camera(s) and return the Yi/Kami dysfunctional camera(s). Then…DO NOT UPDATE your firmware. I did exactly as I just mentioned, and I did it for over 20 cameras. For months my problem has been solved, and there is absolutely NO NEED TO UPDATE FIRMWARE. Cameras operate fine, and operate best on the older firmwares before Yi/Kami switched directions removing features and pushing people to use and/or subscribe to their cloud service ($$$).