As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4345, CREW REPORTED AFTER LANDING UPON GEAR EXTENSION THEY GOT 2 EICAS MESSAGES 1 FOR INBOARD BRAKES INOP AND 1 FOR OUTBOARD BRAKES INOPERATIVE. THEY RECYCLED GEAR WITH NO HELP. DECLARED EMERGENCY AND LANDED USING THRUST REVERSERS BRAKES APPEARED TO WORK NORMALLY. AIRCRAFT TAXIED TO GATE SAFELY WITH NO FURTHER INCIDENT. CREW INSPECTION SHOWED NO APPARENT PHYSICAL DEFECTS. REMOVED AND REPLACED BRAKE CONTROL UNIT. AIRCRAFT RETURNED TO SERVICE.