As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR - FLIGHT 2400 - THE CREW REPORTED A ENGINE 1/2 EXTBTL A INOP MESSAGE ON THE EICAS INFLIGHT. THE AIRCRAFT DIVERTED INTO CLE AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE ENGINE NR 1 FIRE BOTTLE A. OPERATIONAL CHECKS WERE GOOD.