As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTS THAT DURING GEAR EXTENSION RECEIVED A LT / RT BRAKE CTRL FAULT MSG ON EICAS, GEAR EXTENDED NORMALLY. CREW DECLARED AN EMERGENCY AND LANDED IN IND WITHOUT INCIDENT. MAINTENANCE WAS DISPATCHED TO THE A/C TO TROUBLESHOOT. MAINTENANCE FOUND THE BCM NR 2 TO BE AT FAULT, AND REPLACED IT AND PERFORMED OPS CHECKS PER EMB AMM. A/C WAS THEN RELEASED BACK INTO SERVICE.