Production programming of ADAU1462

I have a system with a ADAU1462 as a SPI slave, the DSP also connects to a slave I2C EEPROM to hold the DSP program.

During development I have been programming the EEPROM in SigmaStudio via the connection: USBi -> SPI -> ADAU1462 -> I2C -> EEPROM and it works fine

My question is: What is the easiest for production programming? Does a command line programmer exists? Or do I need to remote control (from my production test SW) SigmaStudio via the .NET interface?

Thank you