Hi. Is this a network unlock or a security unlock? With a network unlock, you can either purchase an unlock code from third parties like sim-unlock.net or contact the support center of the carrier the Blackberry is currently locked to and request the unlock code (a fee will be charged). With a security lock, you will either have to perform a security wipe by entering the wrong unlock code 10 times. Please comment below with the model number of the Blackberry device and how exactly it is lock and we will gladly assist further should help still be needed.