Hello! I'm having a lot of trouble trying to unjailbreak my iPad Mini. I jailbroke it a long time ago, way back when iOS 7.1.3 was the latest version. And now, my iPad is slow and laggy because of the modifications and I long for a clean, stock install of iOS 9. However... No matter what I do, I can't restore it. iTunes just gives me the error code 1667, and for whatever reason iTunes doesn't see / respond to it when it's in recovery mode. So, if ANYONE could please help me, I'll do anything to get back to stock on this thing. Whether it's just a full reset, or replacing the entire physical flash memory, I'm willing to do it. Thank you!!