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D-Link DSL-2650U

General features:


  • 1 RJ-11 ADSL port
  • 4 RJ-45 10/100BASE-TX Fast Ethernet LAN switch ports with auto MDI/MDIX
  • Built-in 802.11g WLAN
  • 1 or 2 USB ports


:!: As with all BCM63XX devices, there is no support for the integrated DSL modem. :!:

Supported Versions

Version/Model H/W Rev Launch Date S/N OpenWrt Version Supported Model Specific Notes
DSL-2650U/BRU/D D1 08-Apr-2009 - 10.03 (patched) 1 x USB
DSL-2650U/BRU/D2 D2 14-May-2010 - 10.03 (patched) 2 x USB
MTS DSL-2650U ?(D1) 05-Apr-2010 - ? 1 x USB for 3G modem 1)
DSL-2650BU B1 ? - - 2 x USB, WPS
DSL-2650U (Mod) 2) All - - 2 x USB, WPS, 1 x WAN, 2 x ExtAnt

Hardware Highlights

SoC CPU speed Ram Flash Network USB Serial JTag
Broadcom 6358 300MHz 32MiB 8MiB 4 x 1 Yes Yes Yes?


Flash Layout

Please check out the article Flash.Layout. It contains an example and a couple of explanations.

OEM easy installation

  • Unplug the power cord
  • Press the reset button, don't release it yet!
  • Plug the power cord
  • Wait 10 seconds
  • Release the reset button
  • Select openwrt-DSL2650U-squashfs-cfe.bin file
  • Upgrade the image
  • Wait for it to reboot
  • Telnet to and set a root password, or browse to if LuCI is installed.

OEM installation using the TFTP method

If you want to upgrade using TFTP you follow these steps (as an alternative to the above install process.

Upgrading OpenWrt


If you have already installed OpenWrt and like to reflash for e.g. upgrading to a new OpenWrt version you can upgrade using the mtd command line tool. It is important that you put the firmware image into the ramdisk (/tmp) before you start flashing.

LuCI Web Upgrade Process

Terminal Upgrade Process

  • Login as root via SSH on
  • Use the following commands to upgrade.

cd /tmp/
sysupgrade /tmp/openwrt-DSL2650U-squashfs-cfe.bin

  • If sysupgrade does not support this router, use the following commands.

cd /tmp/
mtd write /tmp/openwrt-DSL2650U-squashfs-cfe.bin && reboot

Basic configuration

Basic configuration After flashing, proceed with this.
Set up your Internet connection, configure wireless, configure USB port, etc.



Architecture: MIPS
Vendor: Broadcom
Bootloader: CFE
Board Id: 96358VW2
System-On-Chip: BCM6358
CPU/Speed BMIPS4350 V1.0 / 300 Mhz BMIPS Dual Core
Flash-Chip: AM29LV320MB
Flash size: 8 MiB
RAM-Chip : K4H561638H-UCCC / DDR-400
RAM size : 32 MiB
Wireless: Broadcom 4318 (mini-pci)
Wireless standard: 802.11b/g
Antenna: 2x
Ethernet: Broadcom BCM5325 w/ vlan support swconfig
Internet: ADSL2+
ADSL: 5V Line Driver AnnexA LAL2020
USB: 2x2.0H
Serial: Yes


Model Number

Front & Back (rev D2):

dsl-2650u_bru_d_side_l.jpeg dsl-2650u_bru_d_back.jpg

Photo of front & back of the casing

Opening the case

Note: This will void your warranty!

  • To remove the cover do a/b/c

Photo of PCB

CPU / Wi-Fi / Switch


port.serial general information about the serial port, serial port cable, etc.

How to connect to the Serial Port (JP1) of this specific device:

  [x] : TX 
  [x] : GND 
  [x] : VCC 3.3V 
  [ ] 
  [x] : RX
  • Speed - 115200
  • Data bits - 8
  • Stop bits - 1
  • Parity - None
  • Flow control - XON/XOFF

Hardware mods

  1. as a beginner, you really should inform yourself about soldering in general and then obtain some practical experience!

Main PCB Mods

Photo of PCB Mods

Adding WAN port

Adding a second Wi-Fi antenna Mod

The board cut section the track going to the built-in antenna (coil on the board), and part of a track udischy in Wi-Fi module and add a screen between the connector / cable external antenna.

Adding LED Mod

D2 - WPS
D4 - second USB port
D10 - ? (can be: WAN port on CPU)

Adding second USB port Mod

Need to unsolder not getting the circuit elements, such as, USB port, LED (D4), circuitry for power supply. This action turns the device D1 ⇒ D2

Adding WAN port Mod

The board can be arranged WAN port (P4).

Need elements:

  1. P4 Ethernet port RJ45 1X1 connector without shield
  2. T2 Single 10/100 Base-tx Lan Magnetic: 12ps6121c.pdf
  3. R196, R197, R201, R202 75 Ohm 0805 size smd resistor
  4. С136 Electrolytic capacitor (I used 220uF*16V)
  5. U14 Unknown IC (just short circuit pads 3 & 5)

Adding WPS button Mod

The board involves the installation of a button (SW3) and LED (D2), it is necessary to check.

Original Firmware Info

The original GPL sourcecode v1.00 can be downloaded Here. It consist on a Linux 2.? kernel with binary Broadcom tools&drivers and sourcecode of the kernel and the rest of tools.

The lastest original firmware (v1.20 at 27.06.11) can be found Here


1) 3G modem can used as a WAN-interface
2) Custom modification of the hardware platform, the device is not available commercially
toh/d-link/dsl-2650u.txt · Last modified: 2015/05/23 22:48 by Mag-Dark_Elf