EOS R5 Mark II Firmware Update, Version 1.0.2 [macOS] - won't update

[cdel3133]

purchased R5 mark ii online 1 Dec 2024. It shipped before 5 Dec (release date for firmware V 1.0.2)

As shipped, the camera is using Firmware Version 1.0.1. I am trying (unsuccessfully) to update to V 1.0.2.

I tried to update using EOS utility and then I tried to update using the CF-express card. In both cases, the error message seems to be saying that V 1.0.2 is >older< than V 1.0.1 and the camera will not go back to an "earlier" version. 

Any suggestions?

[gloverxoh]

I agree that after removing the 2nd card the update was able to work.  Until I removed the SD card it kept giving me errors that the update was older than v1.01.  I had even formatted both cards with a low level format.  Removal of the SD card and just using the CF express B card is what worked for me.

[tkyasar]

Thanks. It worked when I can removed the CF and formatted to SD card exFAT.

I didn't have any of these issues with R5 Mark 1