Canon has just made available a new firmware package targeted at its EOS 7D digital SLR camera, namely version 2.0.5, which resolves a FTP (File Transfer Protocol) issue encountered while using a USB cable after connecting the camera to a WFT-E5 wireless transmitter.
Before you consider installing this version, you should know that this release is targeted at cameras that are running firmware 2.0.3, and if the currently installed version is already 2.0.5, then no further action is needed.
Moreover, the transmitter’s firmware must be 1.0.7 in order to be compatible with the present release. So make sure either the transmitter’s firmware is proper, or download Firmware 1.0.7 for Canon WFT-E5 (Type A, B, C, and D).
After these aspects are checked, get and expand the downloadable archive, copy the “7D000205.FIR” file onto the root folder of a compatible CF card, rotate the Mode Dial to select the “P” mode, and insert the card into the camera (make sure it’s turned off).
Now, power on the EOS 7D, go to Menu → Set-up 3 → Firmware Ver. 2.0.3, and press the “Set” button so that the firmware update screen appears. Agree to all the displayed dialogs, including the one asking if you want to update firmware from 2.0.3 to 2.0.5, and wait for the process to complete.
During the update, make sure you don’t turn off the device, press any of the camera’s buttons, or remove the memory card from its slot. This will crash the upgrade and might also cause serious damage to the DSLR camera.
When the installation finishes, press the “Ok” button, turn off the camera, remove the battery (for a few seconds) and the memory card, power the device back on, and verify the firmware version to ensure that the process is successful.
That being said, all you need to do now is download Firmware 2.0.5 for Canon EOS 7D DSLR Camera, take into account all the above-mentioned aspects, and enjoy your newly updated device.