Hi I am trying to unlock a 5230 locked to the 3 network UK.

I generated a code,using the only software I have found that does 3 network. not sure if is correct tho.

IMEI:352698041410627

Model: Nokia DCT3
IMEI: 352698041410627
Network: 23420
#pw+7678457955+1#

just comes up "not allowed"

Any help appreciated.

Thanks.