Canon has made Canon EOS 5D Mark IV firmware update version 1.3.0 available for
download.
Firmware Version 1.3.0 incorporates the following fixes and enhancements:
- 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.
- Enables support for the .CR2 image file format on image.canon.
- 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.