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Author Topic: Jtag Saver V1.0  (Read 960 times)

SlickWilly440

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Jtag Saver V1.0
« Reply #15 on: March 25, 2010, 11:54:00 AM »

QUOTE(Aldanga @ Mar 25 2010, 12:42 PM) *

crimpshrine pretty much expressed my thoughts exactly. I've done more unit exploits than I can count and haven't heard of any consoles failing (apart from normal cold-solder issues which are bound to arise eventually).

I find this mostly pointless.


In case cold solder points cause a failure, it is just a temporary failure right (in case of cold Jtag'ed points)?  I'm asking b/c the two solder joints on the wires the connect to the diodes on my 360 are so cold that they are jagged.  

Others have told me to leave the joints along, perhaps I should get a second opinion.
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Hoescout

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« Reply #16 on: March 25, 2010, 11:54:00 AM »

Also have to agree to Aldanga & crimpshrine. Thats total bullf*ck. Also done like at least 10 jtags and never even had a problem with it.

If you solder and isolate everything well theres nothing to worry about. If someone messed up the soldering process he might take use of such crap, but then again he should better stay away from soldering more stuff on the mainboard and programming it.

This news is total garbage, pal my straightlyness

This post has been edited by Hoescout: Mar 25 2010, 07:01 PM
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crimpshrine

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« Reply #17 on: March 25, 2010, 12:02:00 PM »

If you look at that thread I posted from xboxhacker Blackaddr has a very good explanation of the part of the JTAG that if it did do damage, WHAT it would damage:

QUOTE

Even if the JTAG wires did cause damage, it would damage the GPU JTAG port, which would prevent XBR from booting, but would not cause any other permanent damage since the JTAG port on the GPU is not used for normal operation with the original NAND.


So anyone saying their video is getting messed up, or RROD'ing sometime after JTAG, its probably coincidental.

The JTAG circuit and what it relies on is not tied to these other areas people are reporting failures in.



QUOTE(SlickWilly440 @ Mar 25 2010, 05:54 PM) View Post

In case cold solder points cause a failure, it is just a temporary failure right (in case of cold Jtag'ed points)?  I'm asking b/c the two solder joints on the wires the connect to the diodes on my 360 are so cold that they are jagged.  

Others have told me to leave the joints along, perhaps I should get a second opinion.


Cold solder joint on a JTAG would just cause the JTAG to not work 100% of the time possibly. (Occasional the unit would not boot on power on, or you would get more ring of light weirdness) If you have a Jasper and you are not experiencing this  I would not worry about it.   If you do and are having this problem, re-solder the connections and see.  It won't break anything having cold joints on the JTAG.

If you have a Zephyr, you are going to have trouble sometimes, there are confirmed issues with the Zephyr's on power on, randomly.
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ToBbErT

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« Reply #18 on: March 25, 2010, 12:12:00 PM »

Nice i was afraid i couldn't play on my system for a while.

This post has been edited by ToBbErT: Mar 25 2010, 07:12 PM
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bengrimsy

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« Reply #19 on: March 25, 2010, 12:24:00 PM »

Awesome !! i was waiting for a solution like this (IMG:style_emoticons/default/smile.gif) i was hoping to be able to enjoy my jaspers for years to come. now lets just hope somebody will sell some of these at a reasonable price for those of us without pic programmers. Thanks to all involved   (IMG:style_emoticons/default/ph34r.gif) and for you naysayers that think this is BS.....think about it. your sending voltage to places it shouldnt go, and there is a potential for damage there.

This post has been edited by bengrimsy: Mar 25 2010, 07:27 PM
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modslave

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« Reply #20 on: March 25, 2010, 12:25:00 PM »

QUOTE(crimpshrine @ Mar 25 2010, 06:02 PM) View Post

Even if the JTAG wires did cause damage, it would damage the GPU JTAG port, which would prevent XBR from booting, but would not cause any other permanent damage since the JTAG port on the GPU is not used for normal operation with the original NAND.


So if people did believe the JTAG have messed up their 360 they could simply flash back their orriginal Nand and all should be fine.

Im with the, until I hear of more fried 360's im all good camp
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crisdo98

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« Reply #21 on: March 25, 2010, 12:27:00 PM »

until someone can prove to me that this in infact the reason why the consoles in mention died then I call shenanigans.

After modding 70+ jtagged consoles with no issues what so ever.  The occassional rrod is very common but this is the only issue.. nothing a hard reset doesn't fix.

Edit:  Rather the spend all that time releasing a pic, diagrams and a 'you need this our consoles fucked up so will yours' mentality then expect to get flamed without proof.

As above, I've modified my fair share of consoles and have not experienced anything that you are describing.  You are indeed the first and only person that seems to be having this issues with boards dying (that is if your install is not the cause).

This post has been edited by crisdo98: Mar 25 2010, 08:27 PM
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plaguereign

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« Reply #22 on: March 25, 2010, 12:30:00 PM »

If I wanted to sell this, do you think that I wouldve posted the pic hex and schematic?  People are soooooo intelligent (IMG:style_emoticons/default/jester.gif)

BTW,  Use it,  dont use it.  Dont spam my fuckin thread.  I have respect for others, have the same for me.

This post has been edited by plaguereign: Mar 25 2010, 07:44 PM
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lvader1

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Jtag Saver V1.0
« Reply #23 on: March 25, 2010, 12:30:00 PM »

QUOTE(Jtag Saver 1.0 by Xbox1crew @ Mar 25 2010, 01:59 AM) View Post


What will Jtag Saver do for me?
It will, in essence, allow you to safely use your jtagged xbox 360 without worry due to extra voltage or current being applied
to areas that weren't meant to have them applied.


I agree with the others that this is a non issue.
But speaking to this point (I am not an EE) but common sense would lead me to believe that we are dealing with 3,5 and 12v's.
While these "circuits" may not have specifically designed to do what we are doing with them. It's not like we are pumping 100v through a 12v circuit. these WERE designed to have current through them.
so they should not fail just because we are putting current through them at our chosen time frames. and as long as we are not going over the systems limits, there should be no reason to fear failure of these circuits.

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maximilian0017

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« Reply #24 on: March 25, 2010, 12:30:00 PM »

What i've seen on the boards is mainly people blowing up their SPI port(due to their own fault) and not their JTAG port, or old xenons from the bin that need to be reballed.

The original JTAG diode hack is quite elegant in design and a lot of people have thought about it, so i see no reason to change anything.

I predict that more xboxes will die from people who do this hack wrong then the Jtag diode hack.

This is just another 10 steps added to the hack that make it easyer to %$#@ it up.

This post has been edited by maximilian0017: Mar 25 2010, 07:31 PM
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tstein

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« Reply #25 on: March 25, 2010, 12:42:00 PM »

I'm all for the idea of protection when needed....but......

There is no explanation of the root problem.  Without that, you can't possibly "fix" the issue.  Why would you suspect damage "during" operation? What if the source of your damage had been startup related?  A fast transient?  ESD?  

I applaud the effort of a solution and obviously the author has electrical experience to go so far as to provide an embedded solution, however there needs to be a technical description of the problem before you propose a solution.  "It's fried therefore the JTAG needs to be switched off after startup" isn't logical at all.
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Mindstrm

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« Reply #26 on: March 25, 2010, 12:43:00 PM »

So consensus seems to be that this is a pointless and frivolous mod that has addresses a non-issue?  I just want to cover all my bases before I drop good coin on a JTAG'ed console

Thanks,

Mindstrm
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fritoeata

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« Reply #27 on: March 25, 2010, 12:46:00 PM »

So wait...
To be clear.
TOP implies that you still need the JTAG. Does the JTAG wiring actually get used AFTER the NAND has been flashed successfully?

...My understanding of the jtag is that it "rebuilds" it to the original JTAG spec the 360 was designed with (for I/O only. No jumpers, etc)

input anyone? (IMG:style_emoticons/default/blink.gif)

frito

This post has been edited by fritoeata: Mar 25 2010, 08:08 PM
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maximilian0017

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« Reply #28 on: March 25, 2010, 01:18:00 PM »

QUOTE(fritoeata @ Mar 25 2010, 07:46 PM) View Post

So wait...
To be clear.
TOP implies that you still need the JTAG. Does the JTAG wiring actually get used AFTER the NAND has been flashed successfully?

...My understanding of the jtag is that it "rebuilds" it to the original JTAG spec the 360 was designed with (for I/O only. No jumpers, etc)

input anyone? blink.gif

frito


No,

During every startup the JTAG hack is used to change the state of the system so that it can run the exploit, once the system is under our control it isn't needed anymore.

Flashing of the NAND is completely seperate, it uses the SPI port and will work perfectly without the JTAG hack(But XBR/Xell wont work)

Use the Search function.....
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Pacotera

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« Reply #29 on: March 25, 2010, 01:19:00 PM »

This is useless....

On XH you said that you talked to at least 20 people who got the console fried within a week..... it was already stated that EVEN IT THIS WAS POSSIBLE it would only prevent XBR from booting, nothing else... if would not DAMAGE your xbox....

And saying that you talked to people is Anecdotal evidence. Where are these people? Did you checked each console to confirm it was actually problem with jtag and not only old boards (xenon, zephyr, falcon) that just got 3rl from natural causes (and problem with the design of there very boards)?

Did this 20 people you say tried flashing original nand and booting? Did they tried to change the diodes on jtag?


SO yeah.... this is utter bullshit...  jester.gif
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