Its been almost a year since this firmware process hack was first discussed at CarolinaCon by percX. PercX has finally finished up his tutorial/white paper on the subject. In this paper he discusses the hack in-depth. Covering the step by step process around how to gain root level access to high end Xerox MFP devices, how the firmware signing process works, and how to protect yourself from this attack. The paper can be downloaded by clicking here.