How to upgrade the Twonky server on My Book Live 2TB

How can i upgrade the Twonky server on My Book Live 2TB from the current version 5.1.9 to the latest version?

If your My Book Live is already running on latest firmware that means it can support the Twonky Media Server Version 5.x.x because all the updates usually comes with the Firmware updates.

The automatic updates are stopped years ago, i need to update the twonky server to ver 8