WARNING!!! 5D MK III Firmware 1.2.1 Read before installing!

Started Apr 27, 2013 | Discussions thread
arbitrage Regular Member • Posts: 307
Re: WARNING!!! 5D MK III Firmware 1.2.1 Read before installing!

I'm having this same error with 2 of my 5 batteries and as far as I know they are all legit Canon batteries.  It started after installing the leaked firmware.  These 2 batteries still work fine with my 7D and 5D2.  If I do use them in the 5D3 then they can't be registered and say "unknown battery" type but otherwise seem to work fine.

I'm sure the reports of this problem will increase dramatically on Tuesday as more people install the official release from Canon.

 arbitrage's gear list:arbitrage's gear list
Nikon D500 Sony a9 Nikon D850 Canon EF 100mm f/2.8L Macro IS USM Nikon AF-S Teleconverter TC-17E II +16 more
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tko
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