As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL370, THE AFT CARGO FIRE LIGHT ILLUMINATED. DIVERTED, AN EMERGENCY WAS DECLARED, AND LANDED WITHOUT INCIDENT. CONFIRMED NO FIRE. THE AIRCRAFT WAS GROUNDED. TAXIED TO THE GATE AND DEPLANED NORMALLY. REPLACED AFT CARGO SMOKE ELECTRONIC UNIT IAW AMM 26-16-02. INSPECTED ALL 6 AFT CARGO SMOKE DETECTORS. NO DEFECTS NOTED.