Operating System: Not Applicable (Note: might work with other versions of this os.)
NB1 ADSL2 Single Ethernet Modem Router Firmware File
The latest version of Firmware (2.A02NCT10.8321A), as well as the firmware upgrade instructions are attached to this article, and can be downloaded below
Ensure that ALL Antivirus / Firewall / Security programs are turned OFF before performing the firmware upgrade. Also ensure that you are performing this firmware upgrade when connecting to the NB1 with the Ethernet cable. Do NOT use a Wireless connection to upgrade the firmware. Save both files to your computer, and follow the instructions to upgrade your firmware.