PreSonus Sceptre S6

No updatable firmware on the PreSonus Sceptre S6

It is analog or fixed-function hardware, so there is nothing to update.

You can still add it to your rig to keep an inventory and track its used market price.

32-bit DSP (Fulcrum Acoustic TQ) factory-programmed. No user-accessible firmware updates. Only DSP adjustment is a hardware factory-reset via button combination on power-up. Discontinued.