Hello friends, i have just recently purchased the Vodafone 3G USB Stick K3770-Z and it is the locked and i wanted to unlock it. So does anyone knows that how to unlock the Vodafone 3G USB Stick K3770-Z so that i can use the maximum speed which is the 7.2 kbps and where right now i am getting the 4 mbps speed. So does anyone knows the method then please tell me so that i can get it and use it for me. So please tell me. Thank you.