As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 25 BTV-JFK, CREW DECLARED EMERGENCY DUE TO DURING APPROACH UPON GEAR EXTENSION EICAS MSG BRAKE FAULT AND BRAKE LT FAULT. A GO AROUND WAS CONDUCTED FOR MANEUVERING IN THE AREA TO WORK THROUGH QRH PROCEDURE. REMOVED AND REPLACED NR 2 MAIN BRAKE SHUT OFF VALVE PER AMM 32-41-03. NO FURTHER FAULTS NOTED.