Zyxel P-660HN-T1H Gateway Firmware 3.40(BYH.0)C1

Zyxel Firmware Upgrade Procedure

Step 1 Download the latest firmware with security fix
Step 2 Remove DSL cable from DSL port
Step 3 Reboot your router
Step 4 Reset router to factory defaults
Step 5 Firmware upgrade
a. Interconnect your PC/Laptop and router with network cable
b. Open web browser and type 192.168.1.1 (default IP)
c. Login to the router with the default username/password admin/1234; you will need to enter a new password when prompted. After login go to “Maintenance” - “Firmware Upgrade”
d. Select firmware file, which you have downloaded
e. Select firmware and click on upload.
f. Once you click on “Upload,” the router will start to upgrade the firmware and then reboot.
Step 6 Reconnect DSL cable
Step 7 Reconfigure for Internet access

About Gateway Firmware:

By applying this firmware, your gateway can receives fixes for various vulnerability issues, support for newly developed technologies, several authentication-related enhancements, as well as other changes.

However, due to the wide variety of gateway models, as well as the large number of manufacturers, in order to perform a firmware update properly, it would be best if you read and understand the installation steps of this specific model.

In addition to that, it is also recommend that this process be initiated in a steady power environment, and only when you have completely familiarized yourself with the upgrade procedure.

Bear in mind that failing to perform a successful update or interrupting the firmware installation in any way can cause serious malfunctions to the gateway, and might even render it unusable.

Therefore, if you intend to install this version, click the download button and apply it to the gateway. To stay up to date with new releases, all you have to do is check back with our website as often as possible.