ipod classic wipe / restore without computer

How can i wipe or restore an ipod classic 160gb?? because nor pc or mac detect it, i cant charge it or use itunes or any software it doesnt detect it, i even connected it in disk mode and it doesnt detect it, i done every apple recomendation and nothing, the ipod works perfect and i charge it with iphone charger, i think maybe some file inside the ipod got erased and thats why no computer detect it,

i have no apple store near i think the solution is to wipe it but i dont know how to do it with out using a computer.

Help please.