Xbox 360:JTAG/Boxxdr Method

This JTAG (or R-JTOP) wiring for Zephyr, Opus, Falcon, or Jasper motherboards. This method may disable 5.1 audio output.

Equipment Needed

 * A soldering iron, solder, and flux
 * Isopropyl alcohol (90% or higher recommended) and cotton swabs
 * 28AWG or 30AWG wire
 * Two 10K Ohm 1/2W or 1/4W resistors
 * Two 2N3904 transistors
 * Heat shrink tubing

Motherboard Soldering



 * 1) Bend the legs of the two resistors to match the image below and solder them to points A and B by melting the existing solder and pushing the legs through. Ensure that there is enough of each leg underneath the board so that they can be soldered together. [[File:Non-Xenon-JTAG2.png]]
 * 2) Solder the legs together underneath the board, taking care to avoid them touching the other metal points on the board. [[File:Non-Xenon-JTAG3.png]]
 * 3) Bend the bottom leg of one the transistors as shown in the image below, making sure that the writing on the transistor faces away from the heatsink. Solder the bottom leg to point C by melting the existing solder and pushing the leg through. Solder the middle leg to the resistor attached to point A. Repeat this process for the other transistor and its respective resistor. [[File:Non-Xenon-JTAG4.png]]
 * 4) Cut two long strands of wire, soldering one to each of the top legs of the transistors. Cut a piece of heat shrink tubing long enough to cover each of the top legs, then heat it using a hair dryer until it stops shrinking. This will prevent accidental shorting of the wires. [[File:Non-Xenon-JTAG5.png]]
 * 5) Feed the wires through the holes shown below, soldering them to the respective points on the underside of the board. Ensure that your wiring is correct and that the correct line is connected to each point. [[File:Non-Xenon-JTAG6.png]]

Testing your Console
Once you've finished soldering, clean up any flux with isopropyl alcohol and cotton swabs. Partially re-assemble your Xbox 360, ensuring that:


 * The motherboard in the metal cage
 * Heatsinks are attached (if you removed them for some reason)
 * Fans are in place and plugged in
 * The white fan shroud is in place
 * The Ring of Light board is plugged into the front of your console
 * Your video cable (preferably not HDMI) is plugged in
 * Your power brick is plugged in to both you wall and Xbox 360

Turn on your console, and it should boot into XeLL within a minute. At this point, write down (and/or take a picture of) the "CPU Key" listed on screen, and turn your console off. You can now go back to the JTAG (or R-JTOP) hack page and continue from the beginning of the "Creating an XeBuild Image" section.


 * If your console doesn't boot into XeLL, check all previous steps and double check your wiring accuracy and quality. If you're convinced that your soldering and wiring is all perfect and it still doesn't boot, you receive E79 errors, or you have issues with HDMI; you may have a rare console that needs the Boxxdr + Open_Tray method. Go back and choose this method in the hack specific wiring section of the hack guide.

Troubleshooting

 * What should I do if I ripped off a soldering pad?
 * Look online for an alternate point to solder onto. Practice more on junk electronics before attempting to continue.