Canon is throwing out new firmware for the 5D4 and the 6D2. From Canon’s site:
Firmware Version 1.3.0 incorporates the following enhancements and fix: 1. Enables NFC connection with smartphones running Android 10 operating system. *For Android running v6.0 or later, use Camera Connect v2.7.10 or later. *For Android running v5.0 or older, use a connection method other than NFC. 2. Enables support for the .CR2 image file format on image.canon. 3. Fixes a phenomenon in which some camera operations may not be possible or an error may occur after an insufficient flash output is produced when shooting with the flash.