Om 2009 is the third version of the Linux distribution developed by Openmoko.
Before you install Om 2009 it is recommended to check if the bootloader and the GSM firmware of your phone are up to date. Please read the manual for your phone for this purpose.
You can add a bind-home directory to the first partition (must be ext2 or ext3 ) of your SD card. On the Om 2009 boot it will be mounted as /home/root. This way you can reflash your phone without losing anything in your home directory (Paroli contacts and settings, maps, etc)
Make sure there isn't a bind-home directory first
If this exists you are already using bind-home, otherwise keep following the directions below and reboot after this
mv /home/root /media/card/bind-home mkdir /home/root
Installation on Flash
Boot AND REBOOT! The first time it boots there some problems might occur but they're gone after the second boot.
Installation on uSD
Make sure you use ext2 or ext3 as your file system on uSD. Then check this here: Paroli-developer-setup#Upgrading_Paroli_on_a_uSD_card_installation_of_OM2009 or Booting_from_SD#Prepare_the_SD_card.