[SOLVED] JTag an Xbox 360 with a modified update file?

[JooBoo]

I got to thinking, you can update an Xbox 360 using a USB stick with an update file on it, so to JTag it couldn't you modify the update file to modify the NAND to JTag the Xbox?

 

[puw2]

I got to thinking, you can update an Xbox 360 using a USB stick with an update file on it, so to JTag it couldn't you modify the update file to modify the NAND to JTag the Xbox?

Short answer, no you cant since in order to jtag you need to install a circuit to your xbox that disables/overwrites the protection that was installed by microsoft.

To make the jtag work you need to override the protection.

 

[TerryLaze]

I got to thinking, you can update an Xbox 360 using a USB stick with an update file on it, so to JTag it couldn't you modify the update file to modify the NAND to JTag the Xbox?

The whole reason you have to use jtag is that the CPU of the 360 is protected against running uncertified software so it would just not run the modified update.
Jtag is a debugging method all advanced boards need and is the only way to fool the CPU into running anything that was not meant to run on it.

 

[JooBoo]

The whole reason you have to use jtag is that the CPU of the 360 is protected against running uncertified software so it would just not run the modified update.
Jtag is a debugging method all advanced boards need and is the only way to fool the CPU into running anything that was not meant to run on it.

I mean like take an update file that has been certified by Microsoft remove all the code for the update and replace it with the Jtag so the cpu runs it thinking it’s from Microsoft.

 

[TerryLaze]

I mean like take an update file that has been certified by Microsoft remove all the code for the update and replace it with the Jtag so the cpu runs it thinking it’s from Microsoft.

Yeah the CPU itself has protection against that so it doesn't work,it does work for PS3 and maybe in the future they will find a way to do it on the 360 but for now it just won't work.