"Unsupported NAND" won't boot

I am brand new to this unit. 

So I did something stupid and ruined the qtopia default installation. Going
through the different manuals and web pages I figured out that in order to
recover, the standard procedure is to boot into NOR flash's vivi and then
1. do x (format)
2. do v (load supervivi)
3. do k (load kernel)
4. do y (load the root file system)

I have the 256MB version of the mini2440. I am using ubuntu10.10 on the
host side. I did the above four steps, uploading the following files from
the CD, using the loader that is on the CD
/images/linux/supervivi-128M
/images/linux/zImage_N35
/images/linux/root_qtopia-128M.img

when all is done, I can boot linux again with b. However, if I switch the
unit to load from NAND and then reset (power off/on), my terminal will show
"Unsupported NAND", and then stall.

What happend, have I fried something? I doubt it. Is there another image I
should use?

Hi,
i have the same problem like you but with android image, after uploading
vivi, zimage and rootfs and when i switch to nand (boot frm nand memory) my
terminal saw "Unsupported NAND"??? I hope to solve this problem :d