Help with bad NAND

[skitzelles]

I flashed my nand to correct an issue with synching the controller due to a bad block- Once done of course i lost all functions due to a bad donor but most likely user error.
Now I cant boot into Xell and console just turns on but never boots up a screen.

I have Matrix glitch chip with added pins on the side maybe for a flash program like nand x. Is that even possible or would i need to resolder and do it over again.

 

[skitzelles]

https://scontent-dft4-3.xx.fbcdn.ne...=27b13bd62ae0f9fdb5d2acd08b2d1104&oe=5A59BDE0

 

[gavin_darkglide]

the nand pins on the side are for programming the timing file to the chip, not for the nand R/W process. looking at the wiring, it is running rgh1.2, or RGH 1 wiring, with RGH2 nand image.

 

[skitzelles]

I think its a 1.2 RGH as well. So how would I correct the NAND file being corrupt without any access? Do I need nand x and solder it in? Sorry i'm new to this all

 

[skitzelles]

https://www.youtube.com/watch?v=A-qIYQOvna4 would this actually work?

 

[gavin_darkglide]

yes, that is how you use a spi flasher to flash a nand in the xbox. That being said, if the smc part of the nand got corrupted, you might have to short out a couple of the resistors next to the nand when attaching power, so it loads the failsafe smc in the southbridge instead of the one in the nand. I would worry about installing the nand-X wires first. If you can then dump the nand, then there shouldnt be an issue with flashing the nand. if not, and it isnt a wiring issue, there are some tiny resistors next to the nand, and shorting a couple of them together on the nand side of them while plugging in the power will force the SMC failsafe in the southbridge to load, instead of the one on the nand, which should allow you to write to the nand. Just un short them before trying to write. I find a small flat head screwdriver works well for this. So touch the screwdriver to the side of 2 or 3 of the resistors, plug in the power, remove screwdriver, then hit the write button in j-runner. You might have to try it a couple of times before you succeed. This is worst case scenario though.