Error after upgrade ABS *** Solved

[Artist]

After upgrade ABS module error in write full file...
On dasboard : Engine Mailfunction, Immobiliser active.



*** Resolved by replacing the ABS control unit ...
Currently I have an old unit with a broken electronic part disconnected from the connector and the connector connected to the new unit. Later, I remove the old cube and replace the brake fluid, bleed ...
If Mondeo and S-Max were better accessed from behind, it would be enough to just shift the electronic part. There is no place ... ***