Installed Xell, won't turn on

[Avinitlarge]

I am trying to Jtag a Falcon. Read the nand fine, the CD is 5761. Install Xell and I can't turn the Xbox on, wrote the original nand back and it powers on, put Xell back on and it still wont power up. Im a little stuck now. Any idea's?

EDIT:
And now all I am getting when trying to write the original nand is

C:\nandpro20b>nandpro.exe lpt: -w16 nand5.bin
NandPro v2.0b by Tiros

Testing LPT device address:0378
Testing LPT device address:0278
Testing LPT device address:03BC
Could not detect a flash controller!
Can not continue

C:\nandpro20b>

 

[iave9504]

This has happened to me once before and it was caused by me not using the correct smc, check the smc is correct

 

[Avinitlarge]

just double checked everything and all seems well. I can't even read the nand now, ARGH!!!

 

[keil423]

your solder isnt up to par then man. post some pics of your work. And you might want to consider getting a nand x as it makes life so much easier. Are you writing everything manually or are you using jtag tool?

 

[jtag360.nl]

So did you use xell for the Falcon or another motherboard?

You can get it to work again with SHORTING OUT PINS 44-47 of the NAND but it is at your own risk, it could fried the NAND. But you can try it.

 

[M AzeeM K]

LPT is simply a non-reliable method of reading/writing to the NAND. Such things always happen when LPT is used. Perhaps some wire or something got loose, this is why you're getting this error now.

 

[Avinitlarge]

Ive tried with the jtag tool and manually using nandpro20b. It did read the nand, I took 10 nands just to er on the side of caution. I know for sure its not my soldering, I soldered PCB's for 16 years. Ive double checked everything twice now. Ive tried my lead on a Jtagged Xenon ive got and it worked fine.

Its a Falcon BTW

 

[Avinitlarge]

If I do fry the NAND can I replace it with a nand from another motherboard or is it not that simple??

 

[syst3merror]

If I do fry the NAND can I replace it with a nand from another motherboard or is it not that simple??

I guess you probably COULD if you are really REALLY good at soldering tiny ass legs on the chip!

 

[Avinitlarge]

Thats easy to do. I used to replace painter IC's in philips TV's. They are a bit smaller than the ANA but the legs are the same pitch as the NAND, They had about 200 legs and I soldered the chip in by hand. Its not as hard as it sounds either

 

[Avinitlarge]

Right, its alive again. Reflashed the original nand and it came on. Tried to flash Xell with nandpro20b then I got E79. Tried with Jtag tool and finally I have Xell installed!! What a PITA it has been. The Xenon's Ive done were really really straight forward. Anyway, Thanks for the help

 

[M AzeeM K]

Glad you got it working

Have Fun...

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