THIS DOESN'T APPLY IF YOU COULDN'T READ THE NAND IN THE FIRST PLACE, ONLY IF THE ERROR OCCURS AFTER WRITING THE NAND!! OTHERWISE CHECK YOUR SOLDERING!
So, you bricked your xbox? You get the 0x00000 error? No need to throw it out of the window, believe it or not it's actually really simple to fix it.

1. Open up J-Runner with your NAND reader connected (the reader has to be connected to the Xbox too but xbox power has to be disconnected)
2. Advanced, Custom NAND/CR Functions
3. Select Erase, size depends on your Xbox - 16 MB up until certain Jaspers - 16 MB, If you have a Big Block jasper check your NAND dump size and select acordingly
4. Type in Start Block 0, Length 3ff
5. Select Run and quickly (within 1-2 seconds at most) plug in the power plug
6. After a few tries you should see your Flash config as 0x01198010
7. Once it erases those blocks you can reflash the correct NAND image without any errors.

If it doesn't work the first time, repeat the process. You should eventually get a good Flash Config. Good luck!

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