Posted: Sun Feb 20, 2011 3:55 pm Post subject: Im new to jtag so dont laugh!!!! sorry its long!!!
I have been reading forum after forum about Jtaging and loosing dvd keys ect.. I fix the 360 systems for people and after a while i have gathered up a lot of parts. Well I had an urge to jtag one of the junk boxes to practice. Well now i have enough parts to make a working one and I was wondering...
I know that dashboard 9199 has no exploit but you can read the nand to file. Im wondering if with efuses blowing after MS udpates and all can you still write back to the nand or is that the purpose of the efuse to stop the writing of code to an exploitable area of the physical chip.
If not and all an efuse does is blow out a certain pattern in the ROM lay out could you create your own BIN then by copying a good nand from a 9199 dashboard and find an exploited nand dump from a 9199 dash that was updated from an exploited kernel say 7371?
Now lets go even further if you had a j-tag 7371 kernel and updated it to 9199 could you open the file arrange the code to the same layout as the original 9199 dump from the non exploited kernel and write it back to the nand replacing the MS File-vault with one that you know the CPU key to with out ever having to view the original?
I'm starting to see 9199 as a viable update to many j-tag systems. If the file can be exploited as far as writing it to a j-tag system. Why couldn't you get all of the MS File-vault information from another xbox 360 and just use that certificate for the same model with the same updates just to get a dvd rom to work as it was intended?
The reason i have asked this is really this. I have 2 xbox 360's they are both xenon 9199 dashboard non hdmi consoles. One works but dosent have a drive. The other was jtaged and updated to 9199 then the back connector broke off for AV and made the system useless. I want to copy the nand from the one board with the broken av taking the MS File-vault with it that I have the drive for with the key in it and move it to the non jtagged board with the standard 9199 dashboard. I guess in short can I write the broken av nand to the good board nand so the dvd works if everything is exactly the same except the keyvault? I want to change the key vault to one that i know the key for can that be done with out exploiting the system for jtagging?
I am sorry if i didnt explain this well enough but It just struck me as odd that no one has asked this question on any forum and maybe I'm a dumb ass for asking, but hey you never know till your called a NOOB
SCARFACE Administrator
Joined: Feb 06, 2007 Posts: 2470 Location: Minnesota, USA XP: 58,502
Posted: Sun Feb 20, 2011 6:58 pm Post subject:
Well when your on this site you should not be called a noob like other sites do we are not like most but i think it will not work i am sure people have tried it and it did not work but i guess it would not hurt to try. Im not much into the jtag thing yet even though i have a console that can be jtaged never got around to this. Hope someone with more info can post on your topic. Most things i know on this is the kernal version of which can be jtaged and ones that cant be. _________________________________________________________ The one the only Scarface!!
killtaker420 360-HQ Enthusiast
Joined: Oct 04, 2008 Posts: 26
XP: 1,512
Posted: Sun Feb 20, 2011 11:05 pm Post subject:
Oh well it was worth a shot. I have a good 360 this was just a shot in the dark. Who sells nands for Xenon motherboards? Ill just buy one and jump the on-board nand with it. Or ill just use it as a really cool looking dvd player lol.
bomernee 360-HQ Genius
Joined: Apr 20, 2006 Posts: 1105 Location: UK XP: 60,078
Posted: Mon Feb 21, 2011 2:06 pm Post subject:
*dreams the day everyone has jtag*
If you figure out how to exploit the current dashboard I will love you forever.
killtaker420 360-HQ Enthusiast
Joined: Oct 04, 2008 Posts: 26
XP: 1,512
Posted: Thu Feb 24, 2011 1:57 am Post subject:
wow this is ironic, I just bought a red ringed xbox 360 that didn't have the x-clamp fix. Well I had one of the kits and figured for 25 bucks for just the system was a steal. I got the chip reseated and clamped till i can get to my buddy's and re-seat the chip. as soon as it booted I almost had a heart attack it was Kernel version 6717 on the original dashboard. So i think I'm gonna have my friend fix the chip and jtag this one lol.
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