Tonight Canon dropped a new firmware build (1.1.1). You can get it here...
https://www.usa.canon.com/internet/portal/us/home/support/details/cameras/dslr/eos-7d-mark-ii/?subtab=downloads-firmware
The changes, according to the Canon website:
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.
I can't vouch for it, as it's only 42 percent installed on my body at the moment.
https://www.usa.canon.com/internet/portal/us/home/support/details/cameras/dslr/eos-7d-mark-ii/?subtab=downloads-firmware
The changes, according to the Canon website:
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.
I can't vouch for it, as it's only 42 percent installed on my body at the moment.