Description
Basic idea is that when your Xbox flags its self and is not online its never sent to the Microsoft Servers it stays in the secdata of the NAND so you dump the NAND and change the value of the flag from flagged to unflagged and write the changed parts back to the Xbox and BAM! unflagged.

Requirements
- Some wire.
- Soldering Iron
- Soldering experience and confidence
- 5 100ohm 1/2watt Resisters
- 1 Switching Diode. I used 1N914 - 1N4148
- Computer with a LPT port(Printer port)
- LPT cable with a DB25 Male end
- Stuff required to take Xbox 360 apart

Programs
- XVal
- NandPro20b
- FindSecData
- NandCompare
- Windows computer with Command Prompt
- Xbins (if thats how you get the programs)

Steps
1. Take Xbox 360 apart, Totally apart so the mother board is no longer in the frame.
(If you don't know how to do this you probably shouldn't be doing this tutorial)

2. Solder NAND Lpt wire to Xbox 360 motherboard and dumping NAND.
Please refer to this How to JTag tutorial and dump NAND for soldering the Lpt wire and Dumping the NAND. DONT DO THE JTAG POINTS!
(Only thing i did different is compare NAND dumps with NandCompare)

3. Take good dump and run it in FindSecData
(Im asuming you know how to use the command line in this tutorial)

Putting NAND in FindSecData:


Code:
C:\Documents and Settings\----\Desktop\nand patch>findsecdata nandr.bin

findsecdata v0.61 2009-12-01 by boby2pc
Controller version 1
Last filetable change: 0x4D
ECC change: 0x4D Filetbl: 0x01D7 Secdata: 0x01D6 Timestamp: 3D6FB8A2 2010-11-15
ECC change: 0x4C Filetbl: 0x01D5 Secdata: 0x0226 Timestamp: 3D61A943 2010-11-01
ECC change: 0x42 Filetbl: 0x0225 Secdata: 0x038B Timestamp: 3C8F12DD 2010-04-15

Checking secdata:
038B containts not 0 values above offset 1024

Searching for recommended

Extracting secdata:
secdata01D6.bin
secdata0226.bin

Extracting filetables:
filetable01D7.bin
filetable01D5.bin

Creating patched secdata:
Patchedsecdata01D6.bin
Patchedsecdata0226.bin

Creating patched filetables:
Patchedfiletable01D7By01D5.bin

Use:
nandpro.exe lpt: -w16 Patchedsecdata0226.bin 1D6 1
nandpro.exe lpt: -w16 Patchedfiletable01D7By01D5.bin 1D7 1

Press ENTER
And Write fixed parts back!


Code:
C:\Nandpro20e>nandpro.exe lpt: -w16 Patchedsecdata0226.bin 1D6 1
NandPro v2.0e by Tiros

Testing LPT device address:0378
Using LPT device at address:0378
Flash Config: 0x01198010
Block Size: 16KB Block Limits: 0x0001D6..0x0001D6
File: Patchedsecdata0226.bin
Writing
01D6

C:\Nandpro20e>nandpro.exe lpt: -w16 Patchedfiletable01D7by01D5.bin 1D7 1
NandPro v2.0e by Tiros

Testing LPT device address:0378
Using LPT device at address:0378
Flash Config: 0x01198010
Block Size: 16KB Block Limits: 0x0001D7..0x0001D7
File: Patchedfiletable01D7by01D5.bin
Writing
01D7

If you have a Console with 256mb or 512mb NANDs adjust commands accordingly