2.1 Write Customer Key
The write_customer_key command of SAM-BA 3.5 tool remains the same as
            the one for SAM-BA 3.4. Only the first filename must be provided on the command line. 
An example for SAMA5D3 follows:
sam-ba –p secure –d sama5d3 –m
                    write_customer_key:customer-key_sama5d3x.cip
The SAM-BA tool seamlessly probes the ROM code version of the target device to select the
            proper input file between customer-key_sama5d3x.cip and
                customer-key_sama5d3x_nk.cip.
