security code for Nokia 6111 PLEASE!

Hi all,
I had a Nokia 6111, I had it unlocked at a shop & tried 2 different sims in it. It worked o.k. I have now sold it but the buyer has put a o2 card in it & it's asking for a security code? He tried the 12345 one but that didn't work?
Can anyone help?
imei 353657019538115

thanks,
gapr.

 

what country is the carrier locked to atm and what carrier is it currently.

 

U.K. CARRIER! IT WAS LOCKED TO VIRGIN BUT NOW IT IS UNLOCKED!
I HAD 2 OTHER NETWORK SIMS IN IT & IT WORKED O.K.

IT IS ONLY MY BUYERS 02 CARD WHICH IS ASKING FOR THE CODE?????

THANKS FOR REPLY,

GAPR

 

Ok even if it is unlocked try this code to unlock from carrier Virgin. Try to see if it works with this:

#pw+291465017011607+7#


Try this code with carrier 02:

#pw+201305322040346+7#

 

Thanks for codes. I've emailed them to customer, I'll let you know if they work?

thanks,

Gapr.

 

No they didn't work?
My buyer is sending it back!!!!
thanks for trying.

regards,

Gapr.