[Q] SIM unlock T-Mobile G2 Hero for free?

I cannot believe after all this time there is no code generator where you input your IMEI number to get an unlock code for free on the Hero after all this time.

I have a custom rom and need to unlock my phone so I can use it on the "3 Network" but I cannot find any instructions for sim unlocking on a custom rom for T-Mobile. All the guides seem to be Orange related or are quite confusing with counter instructions throughout their respective threads.

Anyone know of a code generator (the sites that sell the codes must be using generators) or know of a reputable place to get the code to work through a custom rom?

I don't want to get a code and then discover that the code won't work on a custom rom on T-Mobile.

Thanks.

T-Mobile G2 Cronos Froyo 1.7.3

Thanks for your reply, unfortunately, they said that they will charge me £15 for a phone which I now have bought off of them because I am at the end of my contract. The gits.

Are there no free code generators?