I'm in the middle of the process (copying system files to MMC) after flashing IT 3.2006-49-2 and have found that tar is already installed, so no need to apt-get it.

So, the updated install instructions would read:
tar cf - -C /floppy . | tar xvf - -C /opt

not:
# apt-get -d install tar
# cd /var/cache/apt/archives/
# mkdir /tar-temp/
# dpkg -x tar*.deb /tar-temp/
# /tar-temp/bin/tar cf - -C /floppy . | /tar-temp/bin/tar xvf - -C /opt

Hope this helps,

Dylan