*** WARNING – This procedure will download and reload of new firmware. All LAN and WAN network connectivity information will be lost. Do not use this procedure unless directed to do so by customer service ***

The SmartLink 4020 can be hardware reset to force the download of new system firmware. This procedure requires access to firmware version software, typically loaded on a local device for downloading. Upon completion of the procedure, the LAN port will be set as a DHCP server with an IP address of 192.168.1.1 and the WAN port will be set as to be a DCHP client.

Procedure:
1. Power the SL4020 off.
2. Press the RESET button with a pencil and hold it.
3. To erase all configuration parameters, power on and hold the reset button for about 8 seconds.
4. Release the button.
5. The SL4020 will go to factory default, and the IP will reset to WAN: 172.16.0.1 and the LAN will be reset to 192.168.1.1.
6. To connect to the LAN port you may need to change the network settings on PC to DHCP client or to fixed IP addressing like: IP address 192.168.1.2, subnet 255.255.255.0, gateway/router 192.168.1.1.
6. Using your browser connect to the SL4020. For example: http://192.168.1.1.
7. Download new firmware to the SL4020 using HTTP or TFTP.
8. Reload the system when propmted.

9. Reconfigure the LAN and WAN network settings for your environment.
10. Reload the SL4020.
11. If you changed your PC's network settings, change them back to the original values.