How to unlock vodafone k3770-z dongle?

Question

i have download many software to unlock my dongle(in .rar format)if i try to extract files present in it.it is asking me to enter password. 
please tell me any better procedure to unlock my dongle .

Answer 1

Have you tried this procedure too?

https://www.youtube.com/watch?v=LM4kjP8TFnM

If it doesn`t work with none of them, ask local Vodafone store to unlock it, paying for it what they require