As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LHR - INFLIGHT FCO-JFK. CREW REPORTED CABIN AUTO INOPERATIVE EICAS MESSAGE. UNABLE TO CONTROL CABIN CLIMB OR DESCENT IN MANUAL MODE DUE TO POSSIBLE LIGHTNING STRIKE. EMERGENCY DECLARED DIVERTED LHR LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED CABIN PRESSURE CONTROLLERS AND ACCOMPLISHED LIGHTNING STRIKE CHECKS. SYSTEM GROUND CHECKED NORMAL OPERATION.