[Q] damaged NVM data? Can't UNLOCK?

[cocteau2x]

I flashed my phone to a pre-release FROYO .. and now can not unlock it ..
I have tried using an unlock service to no avail .. and received an email from them saying this :

"""However if you indeed flashed your phone to JPC version with non released firmware (reg hack via KIES) it is possible you damaged your NVM data and phone will NOT accept the unlock codes However if you indeed flashed your phone to JPC version with non released firmware (reg hack via KIES) it is possible you damaged your NVM data and phone will NOT accept the unlock codes "

Does this mean I have ruined something in my phone and now I will NEVER be able to unlock it? ..

Thanks