Model d-link_dsl-2640u
Flashing via TFTP
- Download the factory firmware image offered above to your Computer.
- Configure a computer with static IP /24 and a TFTP server. On Debian or Ubuntu you can use either the tftpd-hpa or tftpd server packages.
- Rename the downloaded firmware image to `` and place it
in the tftp server’s root directory. (If using tftpd-hpa this is
/var/lib/tftpboot/; if tftpd, it is/srv/tftp/) You can test that the file is downloadable withtftp localhost and get. - Connect the computer to one of the router’s Ethernet ports while the router is off. Press and keep pressed the router’s reset button and power it up. After about 7-10 seconds release the reset button. The power LED will flicker rapidly for ~3 seconds, indicating download of the firmware file.
- The router will write the firmware to flash during ~40 more seconds of occasional power LED blinks, and then will reboot by itself, ready for use.
Flash layout
| Region | Label |
|---|---|
0x000000-0x010000 |
CFE |
0x010000-0x3e0000 |
linux |
0x3f0000-0x010000 |
nvram |
| D-Link DSL-2640U(B) B2 (RU) | |
|---|---|
| Latest release | 10.03.1 Discontinued |
| Device Type | Modem |
| Vendor | D-Link |
| Model | DSL-2640U(B) |
| Flash | 4 MB warning |
| RAM | 16 MB warning |
| CPU | Broadcom BCM6348 (brcm63xx) 1 x 256MHz |
| Ethernet ports | 0 x GBit — 4 x 100Mbit |
| WiFi |
2.4Ghz: b/g |
| Bootloader | CFE |
| Power Supply | 12 VDC, 1.0 A |
| Serial | cacel |
| Additional resources | |