As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOI FLIGHT NR 2391: THE RAMP WAS UNABLE TO OPEN THE CARGO DOOR. MAINTENANCE FOUND WATER FROZEN AROUND THE DOOR. CLEANED AND LUBED ROLLERS AROUND THE DOOR. CYCLED DOOR SEVERAL TIMES. NO FURTHER DEFECTS NOTED. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.