Here is a tutorial on how to Jtag your Xbox 360 with the Boxxdr method and coolshrimps Jtag tool. Parts List 2x 10K ohm ¼ watt resistors 2x 2N3904 Transistors 30AWG kynar wire 3/64’ Heat Shrink Tubing Step 1. Remove the solder from points J2D2,1,2,4 and 7. If you do not prefer doing this step then you do not have to. Spoiler Step 2. Install the two resistors as shown, make sure they go through the board completely. Spoiler Step 3. Flip the motherboard over. Fold the resistor legs over so they pass by each other.Add a dab of solder to join them. Spoiler Step 4. Fold the other resistor legs over as shown and trim them to the length shown. Spoiler Step 5.Add your first Transistor at point J2D2-1.Make sure the flat side of the transistor faces away from the GPU heat sink. During this step the center pin on the transistor gets soldered to the resistor in J2D2-7 Spoiler Step 6. Install the second transistor.It goes in just like the other one and its center pin connects to the other resistor. Spoiler Step 7. Solder a piece of kynar wire to each of the remaining legs on the The wire that goes to the DB1F1 alt point should be 1 ¼ inches in length and the AUD_CLAMP wire should be 3 ¼ inches long.Slide some shrink tube over each wire to protect against shorts and to make a very professional looking appearance.Feed the wires through the holes near the southbridge as shown. Spoiler Step 8.Connect wire to AUD_CLAMP Spoiler Step 9.Connect wire to DB1F1 alternate point.On Zephyr version boards this point may be covered in laminate.On Falcon versions it is already tinned with solder. If you don’t like this point you can always use the real DB1F1(top) or FT1U2 (bottom) Spoiler http://www.boxxdr.com/360jtagtransistor/lr9.jpg This is how to use Jtag tool This is how to install the USB Spi (make sure you do not power on your Xbox 360 while the USB Spi is plugged into your computer Spoiler How to install the drivers Download the drivers and extract to your c:\ http://www.megaupload.com/?d=5FY5ZYCY You should see this popup, choose "NO, not this time," and click next. Spoiler Then choose " Install from list or specified location (Advanced)," and click next Spoiler Select the path, where you extracted the drivers, and click NEXT Spoiler When you see this, just click CONTINUE ANYWAY Spoiler Goto your device manager (RIght click on my computer > properties > hardware tab > device manager) make sure you see LIBUSB-WIN32 DEVICES, expand that, and make sure you see "MEMORY ACCESS." IF you do, it works, now goto the freeboot guide from the main page Spoiler How to flash the NAND with freeboot Download Jtag tool http://www.mediafire.com/?klm4jduuyne Launch Jtag tool (I am using 1.74 with this guide), select your device type (I am using USB), and your console type. Once that is done, hit "READ NAND" button. Spoiler This command prompt window should come up and start reading your nand. Once it's finished, it will look like the pic below, and then hit any key. Spoiler After it's done, this dialog will popup, asking you where to save your nand. I chose C:\backup\ and named my file "NAND-1" then hit save Spoiler Back to this screen, go ahead and hit READ NAND again, and do the samething. Spoiler This screen is back, wait for it to complete. Spoiler Save this nand as NAND-2.bin Spoiler Now that you have 2 reads, goto the command prompt (Start > Run > cmd ), then to your directory. Since I saved mine in C:\Backup, that's where I went. Now Copy this code replace <file1.bin> and <file2.bin> with your file name (mine are nand-1.bin and nand-2.bin), right click in the prompt then hit PASTE and hit ENTER on your keyboard. You should see "FC: no differences encountered," if not, do another read and try it again. Spoiler Now its time to write XELL so hit the WRITE XELL button. Spoiler You will see this, just hit YES Spoiler This will come up and your's should look exactly like it. Spoiler After XELL is installed UNPLUG YOUR JTAG FROM YOUR COMPUTER/LAPTOP Now, with your xbox 360 hooked up to your TV, with the DVD Drive installed, push the EJECT Button, on the console. Grab a Camera, and take a picture of your scree, it should look like something below. We are interested in the lines 03 and 05 (red box) Type up line 3, and with no space, type up line 5. Look at next pic. Spoiler Where you see the CPU KEY box, put in your cpu key you typed up (line 03 and line 05) and select the XB1 Compatibility. TURN OFF YOUR XBOX AND PLUG IN YOUR USB PROGRAMMER Then hit Create BIN. Spoiler Select the nand you read. Spoiler This window will pop up twice, just press anykey. Spoiler It will ask you where to save the file, I chose the same location, and called it "FREEBOOT." Spoiler Confimation Spoiler Now hit WRITE BIN Spoiler Select the image you just created Spoiler You should see this one again Spoiler Success, we're done! Spoiler That was a long tutorial took like 2 hours and 30 minutes haha.