reformat a 4155?

[macscac]

i would like to "reformat" my 4155 and take it back to the condition it was the day i bought it.
how is the best way to do such a thing?

[AnswerDude]

Do a hard-reset(full reset), instruction from HP
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00042662
Then delete files or data in the File Store area if there's any.

[macscac]

thank you