What was found
DIV-TO BOI FOR ENGINE 1 REVERSER UNLOCKED ECAM MESSAGE. CREW SHUT THE ENGINE DOWN. NO BUFFETING REPORTED. CORRECTIVE ACTION: LOCKED OUT REVERSER AND DEFERRED, PER MEL (12/10 SEA). PERFORMED T/R TEST MULTIPLE TIMES, NO FAULTS. REMOVED AND REPLACED BLOCKER DOOR LATCH, CHECKS OK.