C275 Brake Pin
If you unable to resolve the issue, log in to http://myUR.universal-robots.com and create a new case.
C275A12 Attempted to update brakepin state machine before it was initialized.
Problem in joint firmware initialization sequence.
Try the following actions to resolve the issue: (A) Conduct a complete rebooting sequence, (B) Update software, (C) Contact your local Universal Robots service provider for assistance