Not only is there new firmware for the 5D, but also for the 30D and the 1D Mark II N.
Note the potential problem with the 5D! I hadn't heard of that one yet. If your 5D has a certain serial number, you need to bring it to a Canon service center. (I haven't checked my own 5D yet).
30D firmware 1.0.4![]()
We learned that some products have problems displaying Simplified Chinese or Traditional Chinese on the LCD monitor when the display language is set to these languages.
This problem can be corrected by overwriting the character data stored in the camera. So we request that users experiencing this problem overwrite the firmware referring to the following information.
5D firmware 1.0.5![]()
Fixes the phenomenon where the images are monochrome.
Fixes the phenomenon where the shutter cannot be released when using the EOS 5D + EF85mm F1.2L + Speedlite580EX. (*)
*: 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.
1D Mark II N firmware 1.0.4![]()
Fixes the phenomenon where the images are monochrome.
Fixes the phenomenon where the images are overexposed when using Focusing Screen Ec-S.
Thanks for the firmware 1.0.5 link.



