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[superkmk]

I believe its a jasper console, not %100 sure though. It has a liteon 70000 series drive, and its a 360 pro with 60gb hdd. In the summer I upgraded the kernel without realizing that it would kill my jtag ability, and I am wondering how I can go about downgrading?

I want to homebrew.

[under420dog]

it can't be done...not that you got the updated dash...

[thesonandheir]

Cannot be done on your console, sorry.


Just buy a pre summer update console or try and get lucky with a RROD fix, i did.

[lcollier93]

QUOTE(thesonandheir @ Dec 4 2009, 11:02 AM)

Cannot be done on your console, sorry.
Just buy a pre summer update console or try and get lucky with a RROD fix, i did.

yeah i got lucky with an rrod fix as well. this xbox i just fixed has the last exploitable kernel so im happy. =]

[bobasp1]

So why cant you downgrade it with an infectus chip with that time hack?

[mafiafan123]

QUOTE(bobasp1 @ Dec 13 2009, 07:36 PM)

So why cant you downgrade it with an infectus chip with that time hack?

   ... Efuses, and your bootloader is gone nothing to get it back.

[ddxcb]

QUOTE(mafiafan123 @ Dec 13 2009, 09:11 PM)

(IMG:style_emoticons/default/blink.gif)  ... Efuses, and your bootloader is gone nothing to get it back.

Half correct Fuses are blown but the Bootloader isnt gone the CB been updated to blacklist KK kernal.

and buy a RROD 360 on ebay fix it then jtag it.

[under420dog]

QUOTE(ddxcb @ Dec 14 2009, 01:59 PM)

Half correct Fuses are blown but the Bootloader isnt gone the CB been updated to blacklist KK kernal.

and buy a RROD 360 on ebay fix it then jtag it.

3/4 correct...the Efuses (more then one) have been blown and the CB has been locked down(Efuse blown) from this Meaning the new bootloader is in affect...

[arielzadi]

cant efuses be replaced?

[NotZero]

QUOTE(arielzadi @ Dec 18 2009, 04:13 PM)

cant efuses be replaced?

Short answer: No.

Long answer: Nooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo

[j3ll3]

i need a new fuse.... a not so short one.. im about to splode xD

why? coz all these people are so uneducated and so unwillingly to even look for the answer to their question for 4 minutes

NO you can NOT haz hax for 8955 dashboard! xD

[jumojn]

Umm.. I readed somewhere. Wikipedia?!? That it's IBM who have development the efuse. That you could go back from a burnd efuse. It's like a switch.. But i don't think it's possible on the 360   . But i think soon we will find a other way to downgrade... Nothing is impossible in hacking  

[arielzadi]

can someone post some pictures and sources
so i could have a better understanding of how hte hole process works-are the efuses embeded in the cpu?
how large are they
is there anyone in this world thats has the skills to swap them ?
EDIT:
just found this on wiwkipedia
"The primary application of this technology is to provide in-chip performance tuning. If certain sub-systems fail, or are taking too long to respond, or are consuming too much power, the chip can instantly change its behavior by 'blowing' an eFUSE. This process does not physically destroy the eFUSE, so it is reversible and repeatable, using JTAG Programming."
http://en.wikipedia.org/wiki/EFUSE

This post has been edited by arielzadi: Dec 19 2009, 03:07 PM

[jumojn]

swamping them i think would go to E80. It's not so hard to swamp them. All you need is a heatgun iron solder for like smd leds. Dremel sells them   . And they are pritty smal look on google xbox 360 R6T3 . There you see how smal it is. Its pritty smal but whit that ironsolder you can solder it back. But as i said before i think it gose into e80. But you'r cb is allredy updatet so i don't think you could be able to get it to work.

[arielzadi]

so my question is-where is the cb stored?in the cpu?the fuses?-is it possible to swap fuses and only then downgrade cb and kernel?