EOS DSLR & Mirrorless Cameras
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error code 01

is there any other issues other than lens to camera communication which can cause the err01 code to appearas I have cleaned the contacts and it works fine for a while then plays up and locks me out. The other lens there is no problem

Milly by Apprentice
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04/26/2022: New firmware version 1.0.1.1 is available for EOS R5 C
03/23/2022: New firmware version 1.0.3.1 is available for EOS-C70
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01/19/2022: READY FOR ANYTHING EOS-R5 C
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