Nand Dump Error Blocks & E79

[progibson]

Alright, well... i have a xenon motherboard . Ive soldered my nand-x onto my motherboard. I then connect the usb into my computer and install the drivers for it.
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I open up coolshrimps jtag tool, i select usb xexon. And i then click "Read Nand". I only get two error 250's. I get an error on both blocks 3A3 and 3C4. Ive done the nand dump several times and everytime it comes up with the same two errors....
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so... i then click write xell, it writes... i then unplug the usb and turn on my xbox. it comes up with that e79 error... (if i remove the xell, and turn on my xbox and it works perfectly fine)


so i figured i cant write xell when i have two errors?
Can someone just point me in the right direction... i have no clue how to fix this, im tired of researching and getting no where lol.

 

[tr4ckerz]

Is that what I see on your QSB (JTAG part) the switch in position "OFF"? In that way is JTAG disabled and you can't boot Xell. Set the switch to position "0" or to the middle (=with resistor, whatever will work for you) and try to boot into Xell again

 

[progibson]

I forgot to mention that, I have turned that switch on everypossible setting :/

 

[manwithoutname]

Its going to be of three:

a) poor soldering at the JTAG points

b) faulty resistor within the QSB

c) remapping bad blocks is required


I strongly feel its one of the first two though ....

 

[progibson]

So do you think if I switch from qsb to pinheads, it'll fix?

I'm gonna go ahead and try it

 

[manwithoutname]

JTAG part J2D2 doesn't use pin headers, these are only for NAND reading and writing. The JTAG connection part you either use the supplied QSB ormake your own wiring and use switching diodes.

 

[progibson]

alright, so just completly remove both those jtag QSBoards? i will try that tonight, i'll post how it works out. thanks..


*** do i install my self jtag like this? no ohm resistors or nothing??***

 

[M AzeeM K]

alright, so just completly remove both those jtag QSBoards? i will try that tonight, i'll post how it works out. thanks..


*** do i install my self jtag like this? no ohm resistors or nothing??***

No, don't remove the NAND QSBs. Just remove the J2D2 one and put your own wires and diodes there.

Just a question though, why aren't you using the Jtag QSBs i.e. J2D2 and J1F1 QSBs ?

 

[manwithoutname]

He's already got them on and he's getting E79 ...

 

[M AzeeM K]

He's already got them on and he's getting E79 ...

Oh OK. But do you think it will work if he just replaces the QSBs with direct wires? Because according to his last post, it seems like he's just going to replace the QSBs with wires. That's all. No switching diodes or resistors.

 

[manwithoutname]

I have mentioned in my reply to use direct wires and diodes, if he's missed that then that's unfortunate and he'll have to rectify that mistake

 

[M AzeeM K]

I have mentioned in my reply to use direct wires and diodes, if he's missed that then that's unfortunate and he'll have to rectify that mistake

Well, he hasn't replied yet. Maybe he got it working and is so busy with his Jtag that he forgot to post it here , Or maybe not...

 

[progibson]

1) i am removing the QSB becuz he said it might fix my e79 error
2) i havent done it cuz ive done nothing but work these past couple days, havent had time
3) if i remove only that one qsb, do i follow that picture i uploaded, im confused lol. dont wanna f up

 

[M AzeeM K]

1) i am removing the QSB becuz he said it might fix my e79 error
2) i havent done it cuz ive done nothing but work these past couple days, havent had time
3) if i remove only that one qsb, do i follow that picture i uploaded, im confused lol. dont wanna f up

Remove the JTAG QSBs and follow the following diagram:

Remember to use 1N914 switching diodes.