Canon has issued a firmware update for the Canon EOS 7D digital SLR camera. Version 2.0.5 fixes 
a phenomenon in which the image files cannot be transferred using the FTP protocol via USB cable after the EOS 7D camera has established a wireless connection to the Wireless File Transmitter WFT-E5 A, B, C or D. You can download the firmware upgrade from the website below.

Website: Canon EOS 7D Support and Downloads

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