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Service Notice: Wireless File Transmitter WFT-E2IIA: Firmware Update Version 1.0.4


Thank you for using Canon products.

Canon has released a firmware update for the Wireless Transmitter WFT-E2IIA (Wireless File Transmitter for the EOS 1D Mark III, 1Ds Mark III, 1D Mark IV).


Wireless Transmitter WFT-E2IIA


Firmware Version 1.0.4 incorporates the following fixes.

  1. Fixes a phenomenon where a network error occurs when the wireless file transmitter is used while being connected to a network.
  2. Fixes a phenomenon where the connection between the camera and computer is terminated when using the EOS Utility software to shoot movies, and the camera no longer recognizes the wireless file transmitter.

Firmware Version 1.0.4 is for the WFT-E2IIA wireless file transmitter with firmware up to Version 1.0.3. If the firmware is already Version 1.0.4, it is not necessary to update the firmware.

The new firmware (Version 1.0.4) can be downloaded by clicking here.


This information is for residents of the United States and Puerto Rico only. If you do not reside in the USA or Puerto Rico, please contact the Canon Customer Support Center in your region. Please register your EOS 1D Mark III, 1Ds Mark III, or 1D Mark IV. By registering, we will be able to notify you via email when future firmware updates become available for download. If you already registered, please ensure you are opted-in to receive the notification.

Thank you,
Customer Support Operations
Canon U.S.A., Inc

Contact Information for Inquiries
Canon Customer Support Center
Phone:    1-800-OK-CANON
TDD:      1-866-251-3752
Email: carecenter@cits.canon.com
Support options and hours of operation: www.usa.canon.com/support

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