ok.
I used a little different procedure:

1- because when i dd or 'zcat' the kubuntu-mobile.raw image to the first ext3 partition of my mircosd, the partition was corrupted. so i first dd it to another micro sd with no partition on it- and finde that the raw image contain two partition: the fat and ext3.
then i copy the ext3 entries to the 7gig etx3 partition of first micro sd.

2- instead of installing uboot, I flash the kernel just like meego instalation.

I try to upload my video tomorrow