Es gibt eine neue Firmware-Version 1.60 für die EOS R:

Laut Canon mit den folgenden Änderungen:
Firmware Version 1.6.0 incorporates the following enhancements and fixes:

1. Support for the RF85mm F1.2L USM DS lens has been added.
2. 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.
3. Corrects a phenomenon in which the camera may stop operating properly during "auto transfer" when using Camera Connect with a Wi-Fi connection.
4. 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".

This firmware update is for cameras equipped with firmware up to Version 1.4.0. If the camera's firmware is already Version 1.6.0, this update is unnecessary.
When updating the firmware of your camera, please first review the instructions thoroughly.

Once the EOS R is updated to Version 1.6.0 (or later), it cannot be restored to a previous firmware version (Version 1.0.0 to 1.4.0).