A customer's Xbox 360 Jasper 512MB Jtag only has first 2mb read and accidentally wiped out whole nand. I had to use an original donor nand and inject kv and first 2mb, and miraculously it booted and everything is fine, but now when i write Xell onto it, it doesn't boot at all, no rrod, just black screen!!! Jtag wiring triple check ok.
Any ideas guys?
I've had mine boot to black once aswell when trying to load XeLL, my ROL connection isn't clean (didn't use flux), and the factory solderjob there is real messy on mine (don't know about others).
This might be the cause, since my other connection are as clean as they can get.