BB 9500: no attempts left, new security

I have BB 9500 with new secirty (IMEI like xxxxxx-03-xxxxxx-x)
It is locked to vodafone
When I put foreign sim-card the phone asks me if I'd like to enter unlock code. I choose "yes", nothings happens, then I choose yes again, but then the dialog window dissapear
When I enter mepd in advanced options-->sim-card, it shows that the phone has netwok blocked
I can canculate the codes, but how can I reset attempts?
If there is a special software, please, tell me--I will buy it, cause I have many blackberry to unlock with 0 attempts left

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