As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOLLOW INITIALIZATION TAKES ABOUT 30 MINS TO RECEIVE DATA TO FMC'S. DURING PROGRAMING PROCESS A MESSAGE SHOWS UP: "FMCS FILE SYSTEM DOWNLOAD UTILITY INSERT INTO DATA LEADER DISK FORMATTED BY THE PC UTILITY OR PRESS HERE TO EXIT". ACFT GROUNDED. NR 1 & NR 2 FMC'S, OPS NORMAL IAW AMM 34-61-00-710-801.