After saving your changes, you need to transfer the file back to the PS2:
Inside the Code Breaker menu, navigate to the Device Manager. You should see your Memory Card and a USB icon.
You need a standard Ethernet cable (Cat5 or Cat6) . If you are connecting the PS2 directly to the Ethernet port of your PC without a router, you may need a Crossover Cable , though most modern PC network cards feature Auto-MDIX and can automatically detect and bridge a standard cable.