Canon released a bunch of new firmware updates last week for the Canon EOS R5, EOS R6 and EOS 1DX Mark III cameras. The EOS R6 v1.3.0 firmware update, was pulled within 24 hours of being published without any explanation or reason why. Well, it seems that the v1.3.0 firmware contained a not insignificant bug, which Canon was quick to fix. They have now released a new v.1.3.1 firmware.
A video posted to the Chinese social media site BiliBili illustrates the bug and exactly what causes it – using a rather fetching Helly Kitty themed EOS R6, resulting in “Err 70”. It appears that the issue is caused when shooting Full HD video in high-speed modes using EF-S lenses or cropped shooting mode.