How to upgrade new software in FTB-1?
You need to download the firmware from the official website. However, the firmware is not directly available for public. You will have to log in in order to download the firmware update file.
After the firmware is downloaded, you can use the available information to update the firmware as well.
If you run into issues, use the Contact US page to contact the developers: http://www.exfo.com/contact-us