Upgrade New Firmware for D-Link DSL-520B

Bismillah

Download the new firmware at http://support.dlink.co.id/firmware/DSL-520B-SE_1.22_07202009.rar

tftp

It's a trivial FTP (the "very light version of FTP", sometimes used by network devices because of its simplicity). If you use Windows, you can install tftpd32. If you're an Ubuntu user, yes, "sudo apt-get install tftp tftpd". We need this to transfer the firmware file from our computer to the ADSL router.

Steps

0. Extract the new firmware file (DSL-520B-SE_1.22_07202009_cfe_fs_kernel) to /path/to/tftp-server/
1. Login to ADSL router using telnet 192.168.1.1
2. > tftp -g -f DSL-520B-SE_1.22_07202009_cfe_fs_kernel 192.168.1.2
3. Wait until the process is done (about 10-15 minutes). Enjoy.

References
http://blog.dlink.co.id/2009/07/new-firmware-dsl-520b.html