Firmware Version 1.4.0 incorporates the following enhancements and fixes:
1. Adds the ability to select [WPA2] and [WPA3] as a secured protocol.
2. Adds support for the Software Development Assistance Kit (EDSDK/CCAPI).
3. The following issues have been fixed.
3-1. Fixes an issue, in which when performing continuous shooting using the electronic shutter with both the [High-Frequency Anti-Flicker Shooting] and [OVF sim. view assist] options set to [On], Err 70 may occur.
The firmware can be downloaded at:
https://www.canon.co.uk/support/consumer/products/cameras/eos-r/eos-r8.html?type=firmware