We are currently making preparations to correct this phenomenon with the release of a firmware update in early June.
In the meantime, the tentative countermeasure is as follows: • Firmware Version 1.1.1 will no longer be available for download, and Firmware Version 1.1.0 will be made available for download again.
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) 2016 September 8th For using the Wi Fi card from Canon, you’ll need the latest firmware update (V1.1.0) Firmware Version 1.1.0 incorporates the following functional enhancements and improvements: Supports Wi-Fi adapter W-E1.
Enhances reliability of communications when transferring images using Wireless File Transmitter WFT-E7 (A/B/C/D/E). Corrects the phenomenon of Err70 which occurs with certain combinations of settings. Corrects the phenomenon in which in very rare cases the shutter can no longer be released. Enhances reliability of operations for specific custom function settings.