How to upgrade the firmware for SP3350A and SP3352?
"1. Install TFTP Server program, like TFTPD32 or Cisco TFTP Server. Run the TFTP Server program, and make sure the TFTP Server base directory contains the codes.img file. If you do not have TFTP server, download it at http://www.micronet.info/Download/driver/driver.asp#adsl 2. Open the web browser and type 192.168.8.1 in the Address line. Click the Utility item, and it will show several functions in left frame. Click on the Firmware Upgrade link, the right frame will show Firmware Upgrade page. In Upgrade mode, it will show All images. After click OK button, the router will transfer file and upgrade. If the router upgrade successfully, the web browser will go to the Home page.