Subsity Code Br50 MY MOTOROLAS DISPLAYING 'ENTER SUBSIDY CODE'?

MY MOTOROLAS DISPLAYING 'ENTER SUBSIDY CODE'? - subsity code br50

I have my V8 Orange unlocked phone that I can use my O2 SIM card for 3 months. I went to transfer some of my pictures on my phone to my PC using Motorola Phone Tools, I said, there were no software updates available installed on my phone and after that had my phone locked again and asked me Subsity code again, as yet, he still has the original code that I pay for it, if unlocked?, please help