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Flashed Wrong Eeprom Now Xbox Wont Boot


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#1 ChicagoUno6900

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Posted 07 March 2012 - 01:31 AM

Long story short, I was trying to softmod a hd for another xbox I had in my chipped xbox. I tried to lock the hd with the eeprom for that xbox and I ended up flashing it to my chipped xbox. Now, the xbox will not show video or play sound or even eject the drive.

Is there any way to fix this? I have googled but there is so much misleading infomation, I don't know where to start.

Thank you in advance.

#2 Heimdall

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Posted 07 March 2012 - 01:51 AM

Which chip? Do you have a chip programmer to flash another BIOS to the chip? If you do then you can flash flashbios 3.0.3 Unauthorized to the chip - that will bypass and then replace the corrupt eeprom. Read this post for details.

If not then you'll need to build an eeprom reader / writer and flash your original eeprom using that. See the link in my signature for details.

Edited by Heimdall, 07 March 2012 - 01:52 AM.


#3 ChicagoUno6900

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Posted 07 March 2012 - 02:57 AM

QUOTE(Heimdall @ Mar 6 2012, 06:51 PM) View Post

Which chip? Do you have a chip programmer to flash another BIOS to the chip? If you do then you can flash flashbios 3.0.3 Unauthorized to the chip - that will bypass and then replace the corrupt eeprom. Read this post for details.

If not then you'll need to build an eeprom reader / writer and flash your original eeprom using that. See the link in my signature for details.


It is this chip. http://www.yoxbox.co...xecuter2-6v1-6/

I do not have a programmer and I do not have the original eeprom. Am I pretty much screwed?

#4 Heimdall

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Posted 07 March 2012 - 04:30 AM

Why weren't you using X2.5035? It's the recommended BIOS for an Xecuter 2.6 chip, and it would have booted straight past the corrupt eeprom.......

And why don't you have an eeprom backup?? blink.gif huh.gif

Which BIOS is on the other bank on the chip? If it's flashbios (the ordinary version) then you could boot that, switch to the original bank and flash either X2.5035 or FlashBIOS 3.0.3 Unauthorized (a 512MB copy).

Otherwise you need to find a donor eeprom (remembering that they are different for different Xbox versions) and build an eeprom reader / writer.

#5 ldotsfan

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Posted 07 March 2012 - 03:30 PM

Donor eeproms courtesy of the author of flashbios 3.0.3 unauthorized, 256 bytes in hex code.

1.0
CODE

4783a27d6a69108b2db2e890e160deed
02c2aa792147cdb0b7a87a77449c5e6e
d0f5f9e6946839e0caa5d2e5fa02b9b7
9d19e6ed363035333739353231393032
0050f2419e5f00002daa6c2399801147
33c3c71a2ba506b30001400000000000
756157fb2c0100004553540045445400
00000000000000000a05000204010002
000000000000000000000000c4ffffff
01000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000


1.1
CODE

a1db72435c915a76c5fbe7e542253851
026824c580583f83a4b5149ec7bb183a
b352396dd7c474b903293aa78a0911eb
f8313320343331393132313332383036
000d3a000f4200009337b1053aa642a5
2cc8470b673a84860001400000000000
756157fb2c0100004553540045445400
00000000000000000a05000204010002
000000000000000000000000c4ffffff
01000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000


1.2
CODE

8f1abb35790ffc16b8f203bd0a26e455
4f56ec367ef34c9d9290b98f42430522
ce47c7cb1b01d7fa365a801f42a6b4b4
1170314d333433303539343332393036
000d3a00593e00003cd5a78aaefbc300
4feb6e2dc1e0e15f0001400000000000
756157fb2c0100004553540045445400
00000000000000000a05000204010002
000000000000000000000000c4ffffff
01000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000



1.4
CODE

a2fe3b0afca82e20ce562ba126e34f0d
9bb3ceb5c5a87a22eebc9c055eec3782
422bc24862e85e0dfe364afbe23eb189
4b242b13333132393639353333313035
0050f2f7f5da0000988f52f2a268150b
817bb15266a0f0020001400000000000
3d6157fb680100004353540043445400
00000000000000000a05000204010002
000000000000000000000000c4ffffff
01000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000


1.6
CODE

0a3ed27cb48e6f94764370122132336d
8ad35d761785dee28ac626d03c7c4341
f698e8d6fdf975e277537de5eab0292e
19b94957363036303235323432323035
000d3a5eb98600000c32503b51040e72
eaf500204aee43e30001400000000000
6b6157fb2c0100004553540045445400
00000000000000000a05000204010002
000000000000000000000000c4ffffff
01000000000000000000000000000000
00000000000000000000000000000000
00000000000000000a00000000000000
68aadd0246458f8f7856bb6901044645
8f8f7856bb69010446458f8f7856bb69
120346458f8f7856bb69020246458f8f
7856bb6912027a9d8000000000000000





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