Fine where to start

My motherboard is a Asus A8N-SLI Deluxe
There are two sata controllers onboard
Nforce 4 sata controller and a Sillicon Image 3114 controller.
I'm using the following tutorial
http://360mods.net/Downloads/details/id=61.htmlIn that tutorial they make use of the xtreme bootmaker.
First I tried it with the Silicon Image Sata controller.
It's reconized by Xtreme boot maker and makes a XBF on C:
I'm Using NTFS4Dos
Then I'm booting my PC with the Sata kabel plugged in/Xbox powered off.
Until I get to command and power on my Xbox
Then I'm going to the right folder:
C:
cd XBF
samread 1234567 12345 (sn)
1 IDE
2 IDE
3 Xtreme
4 Sil 3114
I'm choosing option 4, But then nothing happends and only shows code's like these: A800 of A000
---
Then I Tried the Nforce Sata controller
Kabels switched
And here aswell no problems in Xtreme Bootmaker.
Same boot procedure etc. But now:
1 IDE
2 IDE
3 Xtreme
4 Xtreme
That doens't work either

When i Browsed on the forums i've read that the Sillicon Image controller is pretty buggy. (Sil 3114)
But the Nforce 4 should work fine with a prober mtkflash.
Well i've found the mtkflash for NF4, it does show my controllers now, but when he try to read my firmware out i get messages like.
xx should be xx
What could it be? is the mtkflash for NF4 not the right one for my NF4?