What is the code for the undernet in Megaman Battle Network 4?

Answer 1

what code,do you mean the p-code or the c-code,to get the code go to the space centre in sharo area and go to the second floor,jack into the earth and talk to the officer navi in it and he will say that there is another officer navi who will give you the c-code in undernet 3,go to the undernet 3 and you will find a officer navi talk to him to get the c-code.