Flashing Lock Flag Is Locked

Automotive technicians see this when attempting to reprogram an ECU (PCM, BCM, or TCM). The Ford Integrated Diagnostic System (IDS) throws "Flashing lock flag is locked" if the module's flash memory is secured by a seed/key algorithm or if a previous flash attempt failed, leaving the module in a locked state.

Most phones will ask you to press Volume Up to confirm the unlock. Warning: This will wipe all user data. flashing lock flag is locked