to perform this RGH and utilize the exploit what you will need to do is read the NAND, install the modchip, write the NAND and installing your dash board of choice (i will be using xexmenu).
To do this you will need:
modchip (i will be using the coolrunner from team-xecuter)
coolrunner LPT program cable
male LPT port (printer cable) (x1)
wires (x12 this will be your LPT cable so make them long)
computer with a female LPT port
a program to read the NAND (i used nandprob 2 you can find it HERE)
Jtag tool (software)
flux (not needed but HIGHLY recommended)
***Disclaimer: I am not liable for any damage that may be caused to your property or self from following the instructions in this tutorial. Soldering irons can be very hot and cause burns, as well as possibly break your Xbox 360. Opening your xbox 360's shell will void its warranty. ***
now then lets get started. first you need to completely take apart you 360 there are plenty of guides to do that so i wont cover it here. When the case is removed it should look like the picture. i highly suggest that you take off the metal case it sits in so that you can access the bottom of the motherboard.
Step 1: Checking What Motherboard You Have
note: no xenon or corona motherboards are hack-able yet and i've been told that zephyr xbox's have a very low success rate.
Step 2: Reading the NAND
Step 3: Reading the NAND
it is alright to have 1 or 2 bad blocks in the NAND just so long as all the dumps are the same.
Step 4: Checking If Your Xbox Is Exploitable
to make sure that your xbox is exploitable the you need to know the CB version.
Check the number in the 2BL [CB] field. The CB needs to be one of the following to be exploitable.
Zephyr: 4578, 4579
Falcon and Opus: 5771
Jasper: 6750, 6751
If the CB is not one of the numbers above, the console is not covered in this guide. Since writing this an new exploit call RGH 2.0 has made all phat Xboxs hackable was been released, However I have not had any experience with it.
Step 5: Coolrunner LPT Program Cable
male LPT port
4.8 kohm resistor
if the first cable didn't work then you'll need
male LPT port
220 omh resister (x1)
3.3 komh ressister (x3)
1N4148 diode (x3)
Step 6: Programing the Coolrunner
Step 7: Install/solder the Mod Chip In
the wires of the coolrunner are pre-tinned and cut to the perfect length for optimum glitch time (how long it takes to boot up). i would suggest just putting small amounts of flux on the wires and the motherboard, then touching the wire down and applying the soldering iron until the solder on the wire melts into place.
Step 8: Write the Nand
Step 9: Installing Xexmenu
note: your xbox will not boot to xexmenu you will still have to go though the MS dashboard and launch it. although it is possible to make it so it will boot to it i am not including the instructions in this 'able.