I have an Ericsson T39m dating from 2002, locked to the Orange(EE) network in the UK. Orange gave me an unlock code that didn't work, and then basically admitted that they couldn't unlock it.

There are only 2 goes left before it locks me out so I heard that its possible to unlock via a cable and USB lead. I now have a lead, can anyone direct me to a program that will enable me to unlock the phone?