Things You'll Need
Instructions
Unhinge and open your 360 console's caseing and read the instructions for disassembling your console (included in the References section). This includes unhinging the plastic case from the Xbox 360's metal covers and removing Torx size 10 screws with your Torx screwdriver. Unplug your Xbox 360 DVD drive from the console's motherboard and connect your SATA cable from your PC to the Xbox 360's DVD drive. This will allow you to edit, then copy or "flash" BIN files from your PC to the Xbox 360.
Turn on your computer and open your web browser. Download JungleFlasher (see link in References), then install the program on your computer. Open the JungleFlasher application and choose your Xbox 360's DVD drive from the program's drop-down menu. Select "Edit BIN" and click "OK." JungleFlasher will then copy your Xbox 360 DVD drive's BIN file for modifying and flashing on your PC.
JungleFlasher will then make a modified BIN file for flashing from your PC to the Xbox 360's DVD drive. Select the BIN file you want to copy to the console's DVD drive and click "OK." JungleFlasher will then copy or "flash" your edited BIN file to the Xbox 360's DVD drive. Replace all screws, disconnect the console from your PC, and reconnect all internal hardware inside your Xbox 360 before turning it back on.