As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FINAL 1 HOUR OF FLIGHT GOT ECAM WARNING SMOKE DISH AGENT 2 IN AMBER. AGENT 2 DISCH IN BLUE COLOR. NO INDICATION OF LOWER CARGO SMOKE ON ECAM OR OVERHEAT PRIOR TO ECAM ALERT. FOUND PRESSURE SWITCH ON BOTTLE NR 1 (5WM) BAD, STUCK OPEN. BOTH SQUIBS FOR BOTTLE NR 1 TEST NORMAL. REMOVED AND REPLACED NR 1 LOWER DECK CARGO FIRE EXTINGUISHER BOTTLE PER M/M 26-23-11-4-01. CARGO FIRE PROTECTION SYSTEM OPS CHECKS NORMAL PER M/M 26-23-00-5-01. R/I FROM FACT PREMATURE REMOVAL/INSTALLATION. CREW DECLARED EMERGENCY.