As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOI - ON FLIGHT 2204, A/C OVER FLEW IDA CONTINUED TO PIH, THEN DIVERTED TO BOI, NR 2 DEICE BOOT POSITION (BOTH SIDES) INOPERABLE IN AUTO AND FAST MODE, FAILED TO INFLATE OPERATES NORMALLY IN MANUAL MODE. MAINTENANCE REMOVED AND REPLACED DEICE TIMER. OPERATINAL CHECK OF DE-ICING SYSTEM CHECKS GOOD, NO DEFECTS NOTED. C/W VISUAL INSPECTION OF THE BOOTS DURING INFLATION WITH NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.