blackberry 9720 unlock problem

I have BB9720 locked,
phone doesn’t accept codes calculated by imei and mep and when tried to read codes get this info


Device: Model missing from database.[0x13F85C]
Reading data, do not disconnect phone, wait.....
Reading data, wait...
OS Version:
PIN : 2b7e5f8b
OS NV : 9-66
Dumping data, wait...
Trying to connect phone
Please wait take a while...
Backup saved in folder backup...
MEP CODE : Already unlocked or not have stored code.
All Done.

any idea what’s the problem (phone after factory reset)



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