As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - CREW REPORTED NOSE LANDING GEAR LIGHT ILLUMINATED AND NOSE LANDING GEAR WOULD NOT RETRACT. EMERGENCY DECLARED, RETURNED MIA WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED NOSE LANDING GEAR UPLOCK ACTUATOR. SYSTEM GROUND CHECK NORMAL OPERATION.