I've had the same problem. Had the software tell me that my firmware update was a success and then finding out that CUE can't recognise my mouse now. Can't access the profiles at all anymore.
Here's my log after installing the update.
https://docs.google.com/document/d/1McQGPZ0bYIvphNj_JZLrXT8_09kaItU5M5RImNE2zio/edit?usp=sharing