Canon has released new firmware for the Mark II generation of its EOS 7D APS-C DSLR. Version 1.1.1 includes all the improvements and fixes of previous updates and in addition addresses the following issues:  

  1. Enhanced reliability of communications when transferring images using Wireless File Transmitter WFT-E7 (A/B/C/D/E).
  2. Corrects the phenomenon of Err70 which occurs with certain combinations of settings.
  3. Corrects the phenomenon in which in very rare cases the shutter can no longer be released.
  4. Enhances reliability of operations for specific custom function settings.

Please note that if you are using a W-E1 Wi-Fi adapter the camera nickname will be reset to default when the new firmware is installed. You should therefore change the nickname before using the camera again. Firmware version 1.1.1 is now available for download from the Canon website