Nokia 6210e unlocking problem

[premierdip]

I'm trying to unlock a 6210e. I have typed in the code I got from a calculator and received the message "sim card restriction off" yet when I try to put in a different sim it says "sim card not accepted". It was locked to orange and have tried o2 and virgin sims that work on other phones and they both come up with this message.

Any ideas?

[subway999]

There is two SIM locks on older DCT3 handsets

You need to calculate the 2nd code which is known as the GID1 code

The code is generated through your IMEI number and GID value which I think for Orange is 0000