Can't Install Cacko 1.23 On Sl-c3100

Hi,
I've backed up the current ROM using the D+M menu and confirmed that it can be restored.
I've copied initrd.bin, tools.tar and updater.sh from the Cacko download (1.23 FULL) onto a 256Mb CF and started the update from option 4 of the Japanese service menu.
All I get is a screen saying
Zaurus CF updater
Error opening terminal linux

On booting into the D+B menu and entering the following command with the CF card installed.

# fdisk -l /dev/hda

I get the following result

Disk /dev/hda: 256Mb 256376832 bytes
16 Heads,32 sectors/track, 978 cylinders
units = cylinders of 512 x 512 = 2562144 bytes
Device boot start end blocks id system
/dev/hda1 1 977 250096 6 FAT16

On removing the CF card and issuing the same command I get

modprobe: modprobe: cant locate module block-major-3

The standard default Japanese Sharp ROM is installed at the moment and as I can't read Japanese it is unusable at the moment.

Can someone help me to install Cacko?

Thanks