After buying a IPhone 4, i realized that it was locked to O2 and with me having an Orange sim card, i needed to unlock it.
After trying to find a way without jailbreaking it, i come to the conclusion that the next step was to use cydia (which meant jail breaking my phone).
I'm currently on IOS 7.0.4 and have already jail broken my phone.
I then ran into the problem that not only would SAM not work, but nor would ultraSn0w.
Each time i try to install the app in cydia, i get the following error:

"Note: The requested modifications cannot be applied due to required dependencies or conflicts that cannot be automatically found or fixed."

"Depends firmware >=3.0"

Does anybody know why this is?
And if so, how can i fix this?
Thanks