Download link: Canon EOS 80D Firmware Version 1.03
Firmware Version 1.0.3 incorporates the following improvement and fix:
1. Corrects a PTP communications vulnerability.
2. Corrects a vulnerability related to firmware update.
Firmware Version 1.0.3 is for cameras with firmware up to Version 1.0.2. If the camera’s firmware is already Version 1.0.3, 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.