How to update current Debian Installation?

Hi to all.
My current BBB Installation is running quite well with the debian-7.1-2013-08-26.img from Robert.
How to update to a newer image like

  • BeagleBone/BeagleBone Black: v3.8.13-bone28 kernel
    • 4bit microSD operation…
      without losing my installed packets and scripts.

Thanks a lot in advance

Billy

wget http://rcn-ee.net/deb/wheezy-armhf/v3.8.13-bone28/install-me.sh
sudo /bin/bash install-me.sh

Regards,

Hello Robert
thanks a lot
worked like a charm!