Viggo is a Danish name. You are a Dane? If so, click here
https://www.canon.dk/support/consumer_products/products/cameras/digital_slr/eos-r.html?type=firmware
Why did I lower the firmware version?
I bought my copy of the camera at the end of May. The camera had a pre-loaded firmware in version 1.1.0. Immediately uploaded to the camera firmware in version 1.2.0 without checking how it works with firmware in version 1.1.0.
On firmware in version 1.2.0 the camera freezes at random ("random" is the key word in this case) moments, it is related in some way to the power management system.
What does the problem look like?
In the camera menu under the tab with the key in position 2 I have selected „Power saving" and under „Power saving" I have set "Display off", "Auto power off" and "Viewfinder off" for some values (on example 15 sec., 1 min., 1 min.).
In the camera menu under the tab with the key In position 4 I have selected „Display settings” and under „Display settings” I have set "Display control” to ”Manual" and "Manual display” to „Screen”.
With these settings taking pictures using the LCD display, sometimes the LCD display does not want to go to sleep and consequently the camera does not want to turn off which of course causes excessive consumption of the battery's energy.
The only thing that helps in this case is:
1. Having assigned to some button under the tab "C.Fn4: Operation" under "Customize buttons" function "Switch between VF/screen” and then switch with this button briefly to the EVF and back on the LCD display.
2. Turning the camera completely off using the dial on the left side of the camera (OFF position) and turning it on again (ON position).
I tested it with EF-EOS R and control ring EF-EOS R adapters, all of mine EF lenses from brands like Canon, Zeiss, Yongnuo, Rokinon, memory cards from brands like Sony, SanDisk, Delkin Devices and two brand new original Canon LP-E6N batteries. Currently I do not have lenses with RF mount.
The camera and the adapters were already at an authorized Canon service center and they did not detect any problems with all these devices. Well, my problem appears in a random way so they could not detect anything.
I hope that this downgrade will help me in something. Now, after returning to the firmware in version 1.1.0 I noticed (but maybe it's just my illusion), that Face Detect + Tracking and Eye Detect AF is more sensitive and noise level (on example for ISO 6400) is slightly smaller than when firmware in version 1.2.0 is installed.