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Author Topic: Bios With Integrated Eeprom?  (Read 179 times)

Pandoriaantje

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Bios With Integrated Eeprom?
« on: February 17, 2004, 09:13:00 AM »
as i'm one of the many that's having eeprom trouble i got thinking.
would it be technically possible to design a bios with integrated eeprom data?
so instead of the bios reading out the eeprom it reads the data from itself?

i know 0 about the xbox tech stuff, i'm only good with a soldering iron  biggrin.gif  so hence te question.

ps: no tips about eeprom flashing with patched cromwell or debug bios cause this is my 3rd time my eeprom goes bad and this time i'm just not able to boot anyting...   sad.gif
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Pandoriaantje

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Bios With Integrated Eeprom?
« Reply #1 on: February 17, 2004, 09:28:00 AM »
great, keep us updated.
i really don't wanna bug my friend to desolder his eeprom and do a hot swap  unsure.gif

so you're talking desolder eeprom and flash it or what?
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Xeero

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Bios With Integrated Eeprom?
« Reply #2 on: February 17, 2004, 09:31:00 AM »
I dunno if what you're talking about would be possible, but if possible, you may want to consider keeping a debug BIOS on a bank of your modchip.  Debug BIOSes are able to boot with a hosed EEPROM, so that frees you up to repair it through a flash.
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Xeero

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Bios With Integrated Eeprom?
« Reply #3 on: February 17, 2004, 09:37:00 AM »
There have been a couple XDK releases since the arrival of 1.4/1.5 consoles, so perhaps the BIOSes from these machines would work with said retail consoles.  Dunno if anybody's dumped them, though.  Check Xbins and see what they have.
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Morglum

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Bios With Integrated Eeprom?
« Reply #4 on: February 17, 2004, 09:42:00 AM »
If you have a dead EEPROM on your xbox click the link in my sig. You wont see any text to the screen if you have a v1.4+ xbox, but it WILL repair the EEPROM, i helped a guy called Tank over on the OzXodus boards repair his v1.4 xbox with this method.

I know you said no tips about the cromwell thing, but it still works on all versions of xbox, just v1.4+ you dont get a display to the screen while it fixes it. If its not working for you then you cant be doing it right.
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Pandoriaantje

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Bios With Integrated Eeprom?
« Reply #5 on: February 17, 2004, 09:43:00 AM »
QUOTE (Xeero @ Feb 17 2004, 06:31 PM)
I dunno if what you're talking about would be possible, but if possible, you may want to consider keeping a debug BIOS on a bank of your modchip.  Debug BIOSes are able to boot with a hosed EEPROM, so that frees you up to repair it through a flash.

as i said, this is the third time a have this problem and this time it just won't work.
i tried debug and the patched cromwell but all it does is foag (we got frag so why not foag, flashing orange and green laugh.gif ).
i've been on this baby for 3 days now with no luck, it's totally hosed...
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Pandoriaantje

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Bios With Integrated Eeprom?
« Reply #6 on: February 17, 2004, 09:49:00 AM »
QUOTE (Morglum @ Feb 17 2004, 06:42 PM)
...
I know you said no tips about the cromwell thing, but it still works on all versions of xbox, just v1.4+ you dont get a display to the screen while it fixes it. If its not working for you then you cant be doing it right.

i know man, this is as strage to me as it is to you but it just won't do it....
it has worked be4 but now i'm not getting it to work...

still get

3x boot red/orange
3rd boot: solid orange.

after i press the eject button the dvd drive commes up (can hear it initialise) but it spins down about 2 sec later.

2 sec after that the drives commes back up (green nic led commes on) and i can eject as much as i need an it keeps FOAGin on me (so that's orange and green).

this is without the AV cable, with the composit cable i get green/red flashing in the end.
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Pandoriaantje

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Bios With Integrated Eeprom?
« Reply #7 on: February 17, 2004, 10:02:00 AM »
QUOTE (iceuk @ Feb 17 2004, 06:52 PM)
ditto

the strange thing is, i'm on a v1 xbox so it should work for me...  uhh.gif
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The iNSOMNIAc

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Bios With Integrated Eeprom?
« Reply #8 on: February 17, 2004, 10:27:00 AM »
we need to know and find out WHY the eeprom is going corrupt. I have 2 boxes here and have dumped both eeproms with my programmer.  The only corrupt part of the eeprom is the hdkey-cofounder (the first 48 bytes) the data is encrypted with the sha1. The rest of the eeprom is not encrypted and can be read back with a hex ed or eepmod v0.3

If you replace the first 48 bytes with a known working key from another eeprom dunp then the corrupt eeprom will work fine when loaded back into the xbox.

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Pandoriaantje

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Bios With Integrated Eeprom?
« Reply #9 on: February 17, 2004, 10:32:00 AM »
QUOTE (The iNSOMNIAc @ Feb 17 2004, 07:27 PM)
we need to know and find out WHY the eeprom is going corrupt. I have 2 boxes here and have dumped both eeproms with my programmer.  The only corrupt part of the eeprom is the hdkey-cofounder (the first 48 bytes) the data is encrypted with the sha1. The rest of the eeprom is not encrypted and can be read back with a hex ed or eepmod v0.3

If you replace the first 48 bytes with a known working key from another eeprom dunp then the corrupt eeprom will work fine when loaded back into the xbox.

get me one of your programmers!  wink.gif
laugh.gif
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The iNSOMNIAc

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Bios With Integrated Eeprom?
« Reply #10 on: February 17, 2004, 11:19:00 AM »
it the old faithfull Multi programmer v3.5 aka the Elvis programmer used in the sat world for reading and writing wafers and goldcards etc etc. With the eeprom wired with flying leads to the ic socket and running multiprog v1.40 on the i2c page.

I can dump and flash code to the eeprom no problems i just want to know why its only the first 48 bytes that gets corrupt. it has to be to do with the sha1 and the encryption but why is the box writing to the eeprom..!!  At boot time it should read from the eeprom not write to it ?

Both corrupt boxes were playing ok then reset to play another game when they went corrupt. The only thing they both had in common was they were chipped via lpc bus. one was a xecuter 2.3 (1.4 box) and the other was a cheapmod (1.1 box)
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Morglum

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Bios With Integrated Eeprom?
« Reply #11 on: February 17, 2004, 02:38:00 PM »
QUOTE (iceuk @ Feb 17 2004, 07:46 PM)
QUOTE (Morglum @ Feb 17 2004, 07:42 PM)
If you have a dead EEPROM on your xbox click the link in my sig. You wont see any text to the screen if you have a v1.4+ xbox, but it WILL repair the EEPROM, i helped a guy called Tank over on the OzXodus boards repair his v1.4 xbox with this method.

hmm.. it just reboots the xbox 3 times..

works ok on 1.3 and below tho

any pointer on what im doing wrong

Theres no reason why it should FRAG. You need to download the patched cromwell and the eeprom patcher, it only takes 3 steps to do.

1) Download and then extract and put them into the same folder with your eeprom named eeprom.bin.

2) Then open a command prompt and move to that directory, and type "addEeprom cromwell-patched.bin eeprom.bin"

3) Then just flash cromwell-patched.bin onto your modchip and boot from it.

Thats all there is too it, if you have an xbox v1.0 - v1.3 you'll see some text to the screen saying the flash was successful, if you have a v1.4+ you wont see anything to the screen. Just wait a minute to be sure its finished flashing even though it wont take anything near that long, then turn the xbox off and reflash your modchip with whatever BIOS you use. Thats all there is too it.
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The iNSOMNIAc

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Bios With Integrated Eeprom?
« Reply #12 on: February 17, 2004, 03:56:00 PM »
ICEUK thats the one.. quarter way down the page. the Elvis multi programmer v3.5. Also available from http://www.cardman.c...rogrammers.html for 45 quid + postage and directly available from the manufacturer http://www.adteknik....glish/order.htm for 55 euro + postage..

I do not know if the USB version works as i only have the Multiprogrammer 3.5 Serial version
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Pandoriaantje

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Bios With Integrated Eeprom?
« Reply #13 on: February 18, 2004, 02:51:00 AM »
i should be able to boot my v1 box with a 1.1 eeprom right?
i can get my hands on a 1.1 xbox this afternoon and i was thinking about hot swapping the eeprom.

i won't be desoldering his eeprom but i'll wire it to my motherboard (i removed my eeprom), boot my xbox with the 1.1 eeprom, disconnect the eeprom and replace it with mine and flash it with configmagic.

this sounds about right?

hdd is unlockled btw, so that shouldn't be a prob.
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Pandoriaantje

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Bios With Integrated Eeprom?
« Reply #14 on: February 18, 2004, 06:22:00 AM »
biggrin.gif
maybe there was something wrong all along and that's why i was getting eeprom corruption... who will know...
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