Canon has released a firmware update for the EOS 7D. The new version 1.0.9 incorporates the following fixes:
1. Improves AF accuracy during Live View shooting.
2. Corrects a phenomenon where in rare instances, movie images shot by the camera may exhibit abnormal colors.
3. Corrects a phenomenon that at certain timings, the shutter cannot be released when the camera’s built-in flash or an external Speedlite is used for shooting.
To learn more about it or to download the update, see Canon’s website.