There’s a new firmware update for the EOS 7D Mark II to improve reliability of communications with WFT-E7, fix some bugs around combinations of custom functions and rescue the chance of spurious Err 70 errors.

firmware update for EOS 7D Mark II

Download EOS7D Mark II firmware update v1.1.1

Canon says this about firmware update v1.1.1

Firmware Version 1.1.1 incorporates the following improvement and fix:

  1. Enhances 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.

Firmware Version 1.1.1 is for cameras with firmware up to Version 1.1.0. If the camera’s firmware is already Version 1.1.1, it is not necessary to update the firmware.

When updating the firmware of the camera, please review the instructions thoroughly before you download the firmware.

Please note:
If using a Wi-Fi adapter/W-E1, the camera’s nickname will be reset to default when you perform this firmware update, so please reset the nickname before using the camera. (Please refer to the W-E1 instruction manual for the setting procedure)