Hmm, my eMMC has got a new interesting name after the latest 12.1 update:



Of course, I cannot be sure that it is the CSSU upgrade that did it. Anyone else seeing the same thing?

EDIT:
Solved it thanks to Switch_:

Go Settings > Bluetooth > change device name to whatever you like, should clear up the issue. Its the configuration of the Bluetooth chipset that causes the issue.

For some reason my device name set under Bluetooth settings had changed.