Console dead after try to RGH + cannot read dumped NAND image

[beyond666]

Console dead after try to RGH + error while creating ecc file

 I will try to be short as possible.

First major problem:
 I have use “USB Super Nand Flasher Programmer” and “X360Glitch Xbox 360 Modchip” on Jasper 256 MB.
 In one moment my programmer cannot read NAND (yes, power cord is plugged in wall). Suspicious as myself, I have tried to turn on console (with fan; without DVD drive and programmer).
 Symptoms:
 - Console is on but there are no errors, no RRD, no sound and no picture of any kind (yes, I have try HDMI and composite connection).
 - Fans work; only center green light is on; cannot connect console with wireless controller; wired controller also won't work; power brick is “green”;
 - 1 out of 10 attempts I can barely read dump from console.
 - I cannot even make master reset (combination of Sync and power button).

Second major problem:
 - ECC Glitch Generator 1.1 show error "ecc file could not be created correctly" when try to create ecc file from NAND dump file (I have compare dumps with Jtag tool and out of 8 dumps, 5 are identical)
- It seems to me that NAND dump in the Xbox is not good.

- 360 Flash Dump Tool 0.97, cannot open my dump. Error: “Couldn't read file or image is unsupported”. Is that meaning i have "broken" dump?
 - All my NAND dumps (I have couple of 64 MB and 256 MB NANDs) have error 250 on block 878

I don’t know what I do wrong.
 - I think there is dashboard 2.0.14699
 - Resistor r4b24 on Hana chip is OK (it got 33 ohm)
 - I have use only USB flasher
 - Programmer is correctly installed (in device manager is recognized “LibUSB-Win32 devices” as “memory access”)

NAND wont open in Degraded? Here is how to fix that.
 1) Make a copy of your NAND backup
 2) Open that copy in a hex editor
 3) At offset 0x0012 you will see 2004 - 2007 Microsoft Corporation
 4) Change that to 2004 - 2005 Microsoft Corporation
 5) Now you image will open in Degraded.

I have followed this tutorial.
 In my dumps instead "2004 - 2007 Microsoft Corporation" i have "zeropair image version=01, CB=6750".
 But in donor bin file (Jtag tools have option to download) "Jasper(256MB) Clean Nand" i can see "2004 - 2007 Microsoft Corporation".

 Is possible that my dashboard in xbox is totally f****d? I repeat... My console cannot boot.

[Gazcoigne]

ive never seen a usb nandreader give bad dumps so your wiring must be bad!! all your symptoms point to this

did you write anything to the NAND? madness if you havent got a good dump, been said many many times before

AFAIK you can flash an ECC image from a similar system (same mobo) to get Xell running, to obtain CPU key

from there you should be able to build a new NAND from scratch.

[beyond666]

I have somewhere/somehow f****d up.
I'll try to find ecc file for my console. Tnx for help.

[beyond666]

Of course i cannot find ecc for my console.
Is there web page with all possible versions nand dumps?

[SSkillZ]

Can you upload your nand dump (1 of the 5) or part of it (first megabyte)
and what command have you used to read it?
If nandpro didn't report any more bad blocks they should be ok or something like nullified since they have ECC data.

Have you tried flashing orignal nand back? If not, you can write it back, verify it (Read it back and compare), and see if
the console will boot with RGH disconnected and check critical areas (like under the CPU).

[beyond666]

My dumps are lost forever. 
One good fella have retail dump so he will make me dump
for console (I'm not interested for Live so i sent him my CPU key).