Firmware v1.3.2 for the Canon 5D Mark IV was pulled due to few bugs that were found out after the release so Canon has released an update that corrects the issues. If you have installed v1.3.2, you should update immediately update to v1.3.3
Firmware Version 1.3.3 incorporates the following fixes:
- Improves the camera’s connection compatibility to a PC while using a USB 3.0 or higher compatible cable.
- Fixes an issue, in which self-timer shooting cannot be performed in Firmware Version 1.3.1 and 1.3.2.
- Fixes an issue, in which an electronic beep does not sound when registering an AF frame as the AF start position in Firmware Version 1.3.1 and 1.3.2.
- Fixes an issue, in which a small sound is generated from the speaker when the power is turned on in Firmware Version 1.3.2.
Download firmware v1.3.3 for the Canon EOS 5D Mark IV here