CIC FSC activating problems, sig check fails

I´m trying to activate a customer CIC (used) with FSC with intels and DarkSys method, but both doesn´t work, I´ve tried to delete data01-03 and generalPersistencyData_DiagnosticSWTController via FTP, but even after that I can´t check the sig.der. I´ve also tried to flash it, with didn´t get the result...

Is there a way to remove all what has been done from others? Because I don´t know if it has been activated before..