2 nokias that i cant unlock

hi to all:
i have 2 nokia phones that i cant unlock, could someone pleaseeeeeeeee give me the unlock codes , thanks in advance

nokia 6230i
imei 359394002127060
airtel/vodafone
country spain


and

nokia6103
imei 352730017818754
movistar
country spain

 

#pw+329 946 441 744 522+7#

For 6230.

 

i have tried this code, but i get the message:

imposible to undo restriction

could this be becouse ive tried other codes previously and if so would i be able to retry after a certain period of time?

again many thanks

 

http://forums.afterdawn.com/thread_view.cfm/405992

 

and the 6103

thanks

 

#pw+752 960 770 024 244+7#