High CPU unknown process ("com.apple.MobileSoftwareUpdate.UpdateBrainService (79333)")

I have been having this same issue on an M1 MacBook Air that's running Big Sur 11.0.1. This "com.apple.MobileSoftwareUpdate.UpdateBrainService" pops up every other day and consumes up to 120% of the CPU. It also writes to the disk and takes up RAM.

Would love to get some insight on this if anyone knows more details. From my brief research it seems to be related to iOS more than macOS.

I was able to get rid of it by quitting the process in Activity Monitor. Just right click on it and hit quit. It went away for me and only popped up once the next day, so I quit it again. This was about a month ago - I haven’t seen it since.

Yes, early access beta. Just upgraded to latest beta in hopes there is a fix there.

I'm running on MacBook Pro and Big Sure (11.0.1).

This **** process is still alive and running (currently 98.8% of CPU , 54MB of RAM, 106,3MB written on disk and 7KB bu network).

Does anybody have any info about it?

It appears to be legitimate.

Do you have un-installed updates?

does it cause any problems after quitting?

I'm facing the same but the CPU use is lower (something about 75-80%).

Anybody has any update?

I have same issue - however it's on an iMac PRO and it's already taken 9 hours of CPU time and 2.5GB of real memory (9.47GB virtual)

Are you on Big Sur?

No, it doesn't (at least on my MacBook Pro running with Big Sur 11.0.1).