Are you sure you loaded the AP2 modules? The AP2 modules do not support SensRcore, only the AT3 modules do. For clarification - the AT3 modules are 2-chip modules without a can. The AP2 modules are single chip modules with a can.
For the AT3 SensRcore modules - it is only possible to configure these over the serial port. You do not need to use the molex connector - you can use the solder mount pads, but you would need to create a jig to program your scripts in production. The jig would need to interface to a USB stick.
Sebastian