I think the command to reset some chip was for a sound chip, and Hijack has a way to bypass that chip if need be when in that state.

EDIT: The cs4231a chip, here: CS4231A Issues and explanation

First step for trouble-shooting is to capture a full serial port output of the attempted boot sequence, and post it here for examination.

The Empeg FAQ (link above near top left) will have lots of information about all of this.

Cheers