EOS R3: Firmware Version 1.6.0 incorporates the following fixes and enhancements:

• Adds support for RF-S10-18mm F4.5-6.3 IS STM lens.
• Fixes an issue that may cause the camera, in rare instances, to experience a delayed restart after the camera has gone into Auto Power Off.
• Fixes minor issues.
• Firmware Version 1.6.0 is for cameras with firmware up to Version 1.5.1. If the camera's firmware is already Version 1.6.0, it is not necessary to update the firmware.

EOS R3 Firmware Update, Version 1.6.0 [Windows] (custhelp.com)

EOS R3 Firmware Update, Version 1.6.0 [macOS] (custhelp.com)

EOS R6 Mark II: Firmware Version 1.3.0 incorporates the following fixes and enhancements:

• Adds support for RF-S10-18mm F4.5-6.3 IS STM lens.
• Fixes minor issues.
• Firmware Version 1.3.0 is for cameras with firmware up to Version 1.2.0. If the camera's firmware is already Version 1.3.0, it is not necessary to update the firmware.

EOS R6 Mark II Firmware Update, Version 1.3.0 [Windows] (custhelp.com)

EOS R6 Mark II Firmware Update, Version 1.3.0 [macOS] (custhelp.com)

EOS R6: Firmware Version 1.8.3 incorporates the following enhancements and fixes.

• Fixes an issue, in which, after touchscreen operation, in rare circumstances, the camera operations cannot be performed, and even if the camera is operated, [BUSY] appears on the screen.
• Fixes minor issues.
• If the camera's firmware is already Version 1.8.3, it is not necessary to update the firmware.

EOS R6 Firmware Update, Version 1.8.3 [Windows] (custhelp.com)

EOS R6 Firmware Update, Version 1.8.3 [macOS] (custhelp.com)

EOS R8: Firmware Version 1.2.0 incorporates the following fixes and enhancements:

• Adds support for RF-S10-18mm F4.5-6.3 IS STM lens.
• Fixes minor issues.
• Firmware Version 1.2.0 is for cameras with firmware up to Version 1.1.0. If the camera's firmware is already Version 1.2.0, it is not necessary to update the firmware.

EOS R8 Firmware Update, Version 1.2.0 [Windows] (custhelp.com)

EOS R8 Firmware Update, Version 1.2.0 [macOS] (custhelp.com)

EOS R7: Firmware Version 1.4.0 incorporates the following fixes and enhancements:

• Adds support for RF-S10-18mm F4.5-6.3 IS STM lens.
• Fixes minor issues.
• Firmware Version 1.4.0 is for cameras with firmware up to Version 1.3.1. If the camera's firmware is already Version 1.4.0, it is not necessary to update the firmware.

EOS R7 Firmware Update, Version 1.4.0 [Windows] (custhelp.com)

EOS R7 Firmware Update, Version 1.4.0 [macOS] (custhelp.com)

EOS R10: Firmware Version 1.4.0 incorporates the following fixes and enhancements:

• Adds support for RF-S10-18mm F4.5-6.3 IS STM lens.
• Fixes minor issues.
• Firmware Version 1.4.0 is for cameras with firmware up to Version 1.3.0. If the camera's firmware is already Version 1.4.0, it is not necessary to update the firmware.

EOS R10 Firmware Update, Version 1.4.0 [Windows] (custhelp.com)

EOS R10 Firmware Update, Version 1.4.0 [macOS] (custhelp.com)