Good one! After some issues trying to run a full-fledged synth straight away, I went back to the basics to make sure the ARM and DSP cores were booting at all. I found a guide for flashing and verifying the bootloaders for all three cores, and managed to run an application that was flashed via command line and a custom Analog Devices tool. Great experience, given what else I want to do with the SC 589 platform.