9520 can not enter unlock code help me

so what should i do how do fix this if i can make normel that will be good its block at this time if some how i can able to make active i can unlock it but block wont let me put the code
 
iv read my 9520 berry codes but when i try to enter my network code,it says
sim...disabled
network...blocked
network subset...disabled
can anybody explain to me why the net is blocked and how to solve it?
 
It means that they have used all code enter attempts on this unit. It's hardlocked and no free solution is available.
Bring it to a shop that supports that type of issue.
 
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