Sur la page:

http://www.canon.co.jp/Imaging/eos5d...irmware-e.html

il est dit:

For EOS 5D units that contain 1 in the fifth digit of the body number (e.g., XXXX1XXXXX), the correction will not be reflected even if the firmware is updated to Version 1.0.5.
If you have an affected product that you would like to have fixed, please contact the nearest Canon Service Center.
or je suis dans ce cas.... Alors que fais-je ? j'upgrade ou pas ?? (mon firmware actuel est 1.0.1)...

Thanks