Canon EOS-1D Mark IV Firmware 1.0.6 Publisher's description
Canon EOS-1D Mark IV Firmware 1.0.6
This firmware update (Version 1.0.6) incorporates the following enhancement.
1. Firmware Version 1.0.6 enhances the AF tracking performance.*
*AF performance has been enhanced for receding subjects and for subjects that are approaching at a low speed.
Firmware Version 1.0.6 is for cameras with firmware up to version 1.0.4. If the camera's firmware is already version 1.0.6, it is not necessary to update the firmware. (Please note that there is no Firmware Version 1.0.5.)
It is highly recommended to always use the most recent driver version available.
Do not forget to check with our site as often as possible in order to stay updated on the latest drivers, software and games.
Try to set a system restore point before installing a device driver. This will help if you installed a wrong driver. Problems can arise when your hardware device is too old or not supported any longer.