I bought 12 Cams, nd 6 not working, previously make the firmware update for all the cams and now, 6 can’t tour on, we used different adapters, cables, connectors, etc and nothing, some body can help us ???
Welcome to the Forum, @ruven.martinez! 
What detail can you provide about what the cameras are (or aren’t) doing, and what did Support say when you contacted them? A number of different issues affecting Cam Pan v3s have been reported in recent months, so when you say that cameras are “not working” without providing specifics, that makes it difficult for others in the community to narrow the scope of the problem and provide assistance. Describing the problem and any troubleshooting or remediation steps with specific details might help us to better understand what you’re experiencing.
So when you plug them in using the included 2A/2000MA USB adapter, no lights come on and it doesn’t do the calibration moving around?
The other transformers you tried, are they at least 2000MA?
Were those 6 cams mounted outside, and if so were they upside down or right side up?
If 6 went out in short order, and it isn’t any of the things above, I would suspect a power issue at your house. Voltage is too high, or there were surges or brownouts recently that fried them.