As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: EICAS SMOKE ALERT FOR OVERHEAD FLIGHT ATTENDANT REST AREA. MESSAGE WENT OUT AFTER 1 MINUTE AND CLEARED. NO SMOKE DETECTED. ACCOMPLISHED OPERATIONAL TEST. ALL OVERHEAD FLIGHT CREW REST AREA BUNKS GREEN LIGHT PER AMM 26-14-20.