update zImage using supervivi failed! help

update zImage failed, can anyone give a hand?

is there anything wrong with the steps used to update the zImage?

1. switch to NOR
2. connect the serial cable with PC, plug the ac adapter and power on. 
3. select the "[k] Download linux kernel" to update zImage.
4. using dnw download zImage_N35 from archieve download from 
   http://www.friendlyarm.net/dl.php?file=linux-zImage_20090708.zip
5. reboot the board by press the RST buttuon.
6. select "[b] Boot the system" after the system show the supervivi menu. 
7. the system output the following info and hang!


Enter your selection: b
Copy linux kernel from 0x00050000 to 0x30008000, size = 0x00200000 ... done
zImage magic = 0x016f2818
Setup linux parameters at 0x30000100
linux command line is: "root=/dev/nfs nfsroot=192.168.1.61:/export/fm_root
rw ip=192.168.1.64 console=ttySAC0 console=tty0"
MACH_TYPE = 782
NOW, Booting Linux......
Uncompressing
Linux...........................................................................
.......................................................
done,

Try following the procedure from the start.  I came to the conclusion that
"jumping" in part the way through seemed to give inconsistent results.

Also, what are you loading as a root file system?

I did NOT understand what you are saying.

1. Should I following what? can you give me detail steps
2. How can you get the conclusion? there is no jumping operation 
   in the zImage updating procedure.

How did you determine the steps that you said you were doing?  It looks
like you are following some sort of guide.

What I mean is do NOT miss out any steps in the procedure and to start at
the beginning.

From <Mini2440 Downloader Instructions> 
http://www.friendlyarm.net/dl.php?file=linux_download.pdf

do the following :
<x> partition the flash
<v> download the Surpervivi loader program into flash
<k> kernel
<y> root file system

OK?