Making Changes to the FICM Calibration
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Ford RV Cutaway, 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.
At certain times, the entire flash EEPROM will need to be completely reprogrammed. This is due to changes made to the strategy or calibration after production. Refer to PCM/TCM/FICM Reprogramming on the diagnostic tool.