The other day Canon apologized for the inconvenience caused 5D Mark II customers by suspending the availability of the Version 2.0.3 firmware. But they made it up to us DSLR users by introducing the Version 2.0.4 firmware. The new firmware corrects malfunctions that occurred in the previous Version 2.0.3 firmware; the manual recording level changed and made recording impossible.
Customers such as I who have the Version 2.0.3 firmware on their cameras should update the firmware to Version 2.0.4.
To update your EOS 5D Mark II Firmware to version 2.0.4 click on the following link.