We will introduce these methods for upgrade:

1.update under UI

    Please download firmware (ZIP) from download center of QNAP official site

   then unzip it and you will get a "TSxxxxx.img" file. And you could go to

   administratiron UI ( web interface) for firmware update.

2. upgrade under QNAP Finder

3. Live update

4. upgrade via command line mode:

    (please refer to http://wiki.qnap.com/wiki/Manually_Updating_Firmware)