As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AT CRUISE 37,000 FEET THE NUMBER 1 OIL FILTER BYPASS LIGHT ILLUMINATED. RAN THE QUICK REFERENCE HANDBOOK PROCEDURE AND SHUT DOWN THE NUMBER 1 ENGINE. DECLARED EMERGENCY, DIVERTED TO STL. AIRCRAFT WAS OVERWEIGHT FOR LANDING. REMOVED AND INSTALLED SERVICEABLE 8130 NUMBER 1 ENGINE PER CARD 08L4007203.