[Help] problem unlocking 8390 from Canada

[nba33]

I have read quite a few posts but can't figure out what I'm doing wrong.

I have a 8390 for Rogers AT&T in Canada. I use the online calculator with the following settings and it spits out the 7 codes.

IMEI: {my IMEI]
Network: Canada - Rogers AT&T Wireless
GEN: V2
Nokia Model: Nokia 8310

From what I have read i should be able to use code #7. Lots of people have requested and says it works etc...But when I did it, twice, it tells me "Cannot Unlock Restriction" or something like that. Am I doing anything wrong? The phone is not currently subscribed but that shouldn't matter as codes are entered without the SIM card anyway.

Any advice / insight would be appreciated.

[browntoa]

cannot undo restriction means that all 5 code tries have been used up

only a shop can unlock it now