As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOI - FLIGHT 2344 - THE FLIGHT DIVERTED TO BOI AFTER THE AIRCRAFT FAILED TO PRESSURIZE ABOVE 1 TO 1.2 PSI DIFFERENTIAL. MAINTENANCE INSPECTED THE AIRCRAFT AND REPLACED THE AFT CARGO DOOR SEAL. OPERATIONAL CHECKS WERE PERFORMED AND WERE GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.