Sorry guys but whoever has told you this ..... THEY ARE FLAT OUT DEAD WRONG.
FORD diagnostic software can tell exactly how many times the ECM has been reflashed and can actually retreive an overwriten file .
Just as in computer hard drives be they SSD or Rotary Plater old school they have access to "special" software that can restore/retrieve overwritten data.
This is somthing that they RARELY use or do and is usually only done on major , high dollar claims .
FORD diagnostic software can tell exactly how many times the ECM has been reflashed and can actually retreive an overwriten file .
Just as in computer hard drives be they SSD or Rotary Plater old school they have access to "special" software that can restore/retrieve overwritten data.
This is somthing that they RARELY use or do and is usually only done on major , high dollar claims .