Firmware Version 1.8.1 incorporates the following enhancements and fixes.
1. Adds the ability for images to be cropped and resized during transfer to the FTP server.
2. Fixes the phenomenon, where after updating to firmware version 1.8.0, Err70 etc. occurs under certain conditions.
3. Fixes minor issues.
*1 and 3 are the changes in Version 1.8.0, and 2 is the addition in Version 1.8.1.
If the camera's firmware is already Version 1.8.1, it is not necessary to update the firmware.
Preparations for the Firmware Update:
In the folder you downloaded are the firmware (EOSR6181.FIR / file size: 48,518,960 bytes) and instructions on the firmware update procedures (a PDF file in five languages: Japanese, English, French, Spanish, and Simplified Chinese). Before starting the firmware update operations, please be sure to carefully review the instructions to confirm your understanding of the firmware update procedures.
Firmware download link:
https://www.canon.com.au/cameras/eos-r6/support?option=drivers