Synchronizing the W810i via USB cable

I used K810i-article as template as the configuration seems to be identical.

Set up a syncml-obex-client with the following settings:

 <config>
  <bluetooth_address></bluetooth_address>
  <bluetooth_channel></bluetooth_channel>
  <interface>0</interface>
  <identifier>Sony Ericss</identifier>
  <version>1.1</version>
  <wbxml>1</wbxml>
  <username></username>
  <password></password>
  <type>5</type>
  <usestringtable>0</usestringtable>
  <onlyreplace>0</onlyreplace>
  <onlyLocaltime>0</onlyLocaltime>
  <recvLimit>0</recvLimit>
  <maxObjSize>0</maxObjSize>
  <contact_db>Contacts</contact_db>
  <!-- calendar_db>Calendar</calendar_db -->
  <!-- note_db>Notes</note_db -->
</config>

E.g. to synchronized between KDE PIM (kontact) and the W810i use the following (and adapt the configuration of syncml-obex-client to fit to the block above when asked in the last step):

  msynctool --addgroup  kde2w810i
  msynctool --addmember kde2w810i kdepim-sync
  msynctool --addmember kde2w810i syncml-obex-client
  msynctool --configure kde2w810i 2

Now you can sync with

  msynctool --sync kde2w810i

Synchronizing the W810i via Bluetooth

I did not try to sync via bluetooth yet as using the USB cable worked, but reports elsewhere indicate it should work.