From Canon USA:
Firmware Version 1.6.0 incorporates the following improvements and fixes:
- Support for the RF 85mm F1.2L USM DS lens has been added.
- Corrects a phenomenon in which the function or setting value assigned to the control ring may change when the control ring is operated in Eco mode.
- Corrects a phenomenon in which the camera may stop operating properly during “auto transfer” when using Camera Connect with a Wi-Fi connection.
- Corrects a phenomenon in which high-speed synchronization with use of an external flash may not operate properly depending on the camera’s setting for C.Fn2 “Set shutter speed range”.
Download: Canon EOS R Firmware Version 1.6.0