plug in mod chip

[archaon0]

I have a plug in mod chip called the ps hacker but i can seam to swap discs on some multi disk games e.g. in cold blood in this particular game the disc wont stop till the button which the spring holds down is relesed and doesnt let me save. And i know that once the button is depressed that it loses nesasser data i have heard of a second swap trick could this work and if so how is i done?