unblock 8310 error code

[hidee]

can any body help? i have used the code calculator and when i have entered the code it reads "code error" .i enter the +7# is this correct.
hope someone can help.

nokia 8310
IM :<Removed>
vodafone uk

[browntoa]

sometimes it can be code 1 or 5

did you take out the sim card ?