As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INBOUND FLIGHT DECLARED AN EMERGENCY FOR MECH PARKING BRAKE NOT RELEASE MESSAGE EICAS. CFR FOLLOWED FLT TO GATE, PARKING BRAKE NOT RELEASED EICAS MESSAGE ILLUMINATED. FOLLOWED FIM 32-41-00, R & R EMERGENCY BRAKE PRESSURE SWITCH SYSTEM NR 2 IAW AMM 32-44-09. OPS CHECKED GOOD.