guitarman068

Hi there, I recently bought a used Line6 Toneport DI-G. To my greatest dismay, wheneve I open the line6 Monkey, the sytem kept telling me "The Toneport DI-G you are connecting to is not valid hardware." And inside it the ESN shows 00000000. Since returning it to aftersale is impossbile and the guy who sold me this is not reachable, I'm wondering if there's still any possibility for me to use it? Thank a lot in advance.