Firmware Version 2.0.7 for the RF 24-105mm f4L IS USM lens incorporates the following enhancement:s
1. Adds full-time manual focus, which allows constant manual focus adjustment in both One-Shot and Servo AF modes. This function is enabled when used with compatible cameras.
2. Adds the ability to use the focus ring as a control ring. For example, by assigning to the control ring the ability to change the aperture, you can adjust the aperture without click sounds being recorded by the microphone. This function is enabled when used with compatible cameras.
3. Improves other system stability.
You can download the firmware at:
https://www.canon.co.uk/support/consumer/products/lenses/rf/rf-24-105mm-f4-l-is-usm.html?type=firmware