DSP not configurable?

A project log for Reverse-engineering JBL flip 4

That is, full teardown, analysis, and hacking.

DeepSOICDeepSOIC 11/17/2018 at 17:240 Comments

I have progressively erased all data in User DSP Configuration Data XX fields. The DSP still functions as before. So either, as I erase stuff, DSP reverts to built-in defaults, which match the stored values, or it simply ignores them altogether.