If there is no video, camera status is yellow, and no wifi connection and unable to update the firmware, do this:
1-The lens flex cable connection is loose. Disassemble the camera and re -connect the micro connector.
2-Handle wifi module flex cable is torn due to poor installation at the factory. Either change the module with new flex cable or use soldering station and magnifier to re solder the copper lines. Mine had 3 broken lines that I was able to reconnect them.
Now, I have video and successfully updated the firmware.
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