5D III Firmware 1.2.1 failing Canon Batteries

Ok, just completed the firmware 1.2.1 firmware update (which went fine) but I tested six authentic Canon LP-E6 batteries bought from B&H, Best Buy and Adorama. Two of the six can not be recognized. Four are recognized properly. These are not third party batteries. The all carry Canon markings and to me appear identical to the other four. I reviewed them and cannot find any differences other than the serial numbers. Tomorrow I will contact Canon CPS to understand hopefully what is going on. If the two batteries prove to be counterfeit then I'll claim Canon has a real problem that they need to step up and solve. Both worked fine in all previous firmware versions and had recognized serial numbers. I'll have to find a friends 7D or 5D II to see what they say.

Just to get my story straight I tried them yet again. Now one of the two failing batteries is being recognized. But of course I put both failing batteries in my BG-E11 at the same time.
(currently only testing in the BG-E11 and not in the body directly). Now only one failing.

So maybe there is a 1.2.2 firmware update in our near future.

Two of my newer third party batteries that I bought two weeks ago works fine after the firmware upgrade. Two of my older third party battery that I bought in Dec. were not recognized. Two genuine Canon LP-E6 were fine

The Canon ones are recognized. The ebay and sterlingtek are not

My OEM Canon battery works fine, my 3rd party Sido battery works fine. Not all 3rd party batteries are affected by the firmware update.

I have two Watson batteries that came from B&H that function fine after the upgrade. They appear just like the Canon batteries.

Anyone tried Eneride brand?