type *#06#, you will see the IMEI of your cell phone. while viewing IMEI press left soft button, you will see the version of the full flash of your cell phone. If it is not version 56, you should upgrade it to version 56.
I've sent you document already. Don't forget to back up your firmware by V_Klay or Unisiemens before upgrading or apply patches, it's safely for your phone!