Hi all, just bought my 4th Z ultra. This one i bought from ebay, stunning condition. I was aware that it was pin locked. I thought however after watching YouTube tutorials that it would be an easy fix. Not so. I have tried the variations of #* sequences of symbols and numbers at the emergency call page. Didnt work. I tried hooking up to laptop and using Sony xperia software to factory reset. Didn't work. The guy that had the phone is deceased. Any ideas please. Thanks