Firmware Version 1.4.0 incorporates the following enhancements and fixes:
1. Improves security features. A password must be set initially.
•Adds the ability to review the history of any changes made to the password, network information, or other settings.
*For more information, please refer to the 'Setting a Password' section in the Advanced User Guide on cam.start.canon.
2. Enables firmware updates to be performed when the camera is connected to the internet and new firmware is made available on Canon servers.
3. Adds support for the RF-S3.9mm F3.5 STM DUAL FISHEYE lens.
4. Adds support for the RF-S7.8mm F4 STM DUAL lens.
5. Fixes an issue in which Err70 may occur during Bluetooth communication due to interference from other Bluetooth devices.
6. Fixes an issue in which Err70 may occur when repeatedly shooting in the "High-speed continuous shooting +" mode.
7. Fixes an issue in which image stabilization may stop working when using an EF lens.
8. Fixes an issue in which HDMI output may momentarily stop when [Screen Off] is activated in the Power Saving settings.
The firmware can be downloaded from https://www.canon.co.uk/support/