As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMER PARKING BRAKE FLICKERED ON DURING CLIMB AND CRUISE PHASE OF FLIGHT AND AT ONE POINT TRIGGERED A PARKING BRAKE NOT RELEASED MESSAGE ON EICAS LASTING APPROXIMATELY 10 SECONDS. NEITHER INDICATION REAPPEARED AFTER DECENT WAS INDICATED. DECLARED EMERGENCY, LANDED WITHOUT INCIDENT. INSPECTED PARKING BRAKE SWITCHES, NO DEFECTS NOTED.