As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENG 2 FIRE BOTTLE 2 FAIL AND ENG 1 FIRE BOTTLE FAIL DISPLAYED ON EICAS. REMOVED FROM SERVICE. REMOVED AND REPLACED ENGINE FIRE EXTINGUISHING BOTTLE B IAW AMM TASK 26-21-03-000/400-801-A. RELATED FAULT CODE 26210044UT1 FOUND IN CMC. RETURNED TO SERVICE.