the following software update has been recently published and the device support pages should be also up to date soon:
Nokia X2-02 / SW version 11.57. This is a global release and the key changes are:
When will the next update come?
I can't use usb for mass storage and numbers aren't matched with contacts.
Welcome to the Forum.
To update your X2-02 to 11.79 software version, I would avise you to download Nokia suite and connect the phone to your PC for the update.