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Xbox 360 Jasper 512mb

Hello, I was trying to install the CR4 XL into my Xbox 360. I have sucessfully dumped the first 64mb of the nand twice without using the xbox-nand.bcs script, because the script did not save the dumps for some reason. I checked and verified the nands in J-runner and the files were good. I created a xell reloaded and flashed using the script and installed all the wires and chips correctly to my knowledge, but when i tried to power the xbox up nothing happens. no blinking lights or fans turning on. I have since removed all of the wiring and cleaned all the area of the board. Still it will not start. I have tried reflashing the sucessful dumps but it does not seem to be working. It doesn't actually write to the nand. When i look at the first portion of the nand all the hexes are FF's, which, if i'm correct, is empty space. Is there anyway i can sucessfully write to the nand to atleast get the xbox back up and running til my Demon Xecuter programming chip gets here?
 
FCUSB cannot write the Xell file back to any xbox bigger than the 16mb ones , this is due to some intricate issues.
Make sure your connection to the board has the wires as short as possable and it should be able to write your backup back to the nand properly
 
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