Aquí el nfo del hex:
[PHP]
XBOX Bios / Xtender v1.1 Bios *CRACKED* © Microsoft
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Released : June 1st, 2002 : Game Type : All
Protection : Cmon .. its M$ : # of Disks : 1 * 2.88mb
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Intel 733 , Nvidia GFX , Non Standard DVD ROM , 10 Gig HD
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[ R e l e a s e N o t e s ]
Yep , its the cracked bios for a DIY X-BOX modchip .. before we get to the
real nitty gritty tho .. i'd like to tell u about how i came about this.
Heard the rumours a month or so ago .. then Project X released all them
ISO's and so i decided it would be a good idea to purchase an Xbox .
A friend was kind enuff to send me an xtender 1.1 thru the post .. great i
thought .. pulled the TSOP , read it in .. damnit .. it looks encrypted.
After further examination of the pcb layout i discovered that the full 8
bits of the databus were fed through the CPLD ,ahhhah ! .. a cheeky piece of
bitswapping is afoot . They also fed address lines A4,A5 and A6 into the
CPLD .. which initially made me think that they could use 8 different bit
swap sequence's for every 16 bytes.
Fortunately .. it only looks like the guys got really lazy and used ONE
bitswap sequence for the whole ROM. 71534620 is the sequence in case anyone
cares.
I got a friend to code me up a tiny app which would take a file, swap the
bits in a given sequence and output a decrpyted file.
After running it thru the app and comparing it to the bios i originally
extracted from my own box, i came to the conclusion that i was now in
possession of the correct flash file.
One trip to the local electronics store fer a spare TSOP and a bit of
soldering later .. my xbox was now booting dvdr's.
It also turns out that the original BIOS in the XBOX is mirrored 4 times
throughout the ROM. So .. instead of using a 29F080 like the xtender does
(overkill) , we could use an 020 part and just miss out the top address
lines (A18,A19). Now u know why the original wiring diagram for the
xtender included those 1 and 2 solder points .. and then the reson they
posted that you could omit them .. "For future development" .. my arse.
The statement that the xtender mod being flash upgradeable is a load of
rubbish too .. the CPLD is .. sure .. cos the JTAG lines are brought out
onto the arse end of the pcb .. unfortunately the WE# line of the TSOP
flash rom is permanently tied to ground , meaning that the chip would need
removing from the pcb for upgrading. You may as well do yer own bios
whilst you are at it.
The bollocks cRaptor was spouting about xtender using 5 volts and how
enigmah was better cos it uses 3.3. BULL$#!t .. u think the original BIOS
runs at 3.3 .. no .. it runs at 5 and because the MCPX has voltage tolerant
input pins .. it dont give a rats ass if its running at 3.3 OR 5 volts ..
yet again .. the marketing men trying to devise new ways to make sure you
spend your hard earned cash on a new set of tyres for their sports cars. I
dont care who makes the money out of this and i can sure as $#!t tell u it
aint gonna be me .. so u think IM gonna lie to ya ?
Now for the one that blows all the other modchips out of the water.. they
are needlessly expensve, and u know why .. cos the only chip you need to
mod an xbox is the one in the box itself .. yep .. the 29F080 BIOS that
sits in the box can be removed , reprogrammed and replaced and the box
will play everything an xtender 1.1 or enigmah chipped box will.
Unfortunately , not everyone can handle de/soldering a 40 pin TSOP device
the size of half a postage stamp. Hell .. even i have a hard enough time.
So what im doing is giving away what should have been free from the
beginning .. the cracked BIOS image. Hopefully the guys out there can stop
cRaptor from ripping off more of your hard earned cash and produce some
home-brew CPLD code .. Old Crow stylee. ...
Yours .. playing Halo on DVD-R.. MrSporty
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[ R i p p e d ]
Xtender v1.1 .. hehehe
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[ I n s t a l l N o t e s ]
1) Unpack, read the f***RAPT.TXT
2) Install flash image (MRSXBIOS.BIN) programmed ROM into yer xbox
3) Play ...
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[ G r e e t i n g s ]
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Y por aquí los esquemas para montarse un programador para la flash:
http://web.mit.edu/bunnie/www/proj/flashburn/fb.html
Yo creo q es un poco bestia sacar la bios de la xbox y reprogramarla, pero montarnos un modchip casero no sería muy dificil (ni costoso)...