D-Link DNS-120

D-Link DNS-120

This device is NOT RECOMMENDED for future use with OpenWrt due to low flash/ram.
DO NOT BUY DEVICES WITH 4MB FLASH / 32MB RAM if you intend to flash an up-to-date and secure OpenWrt version onto it! See 4/32 warning for details.

1) This device does not have sufficient resources (flash and/or RAM) to provide secure and reliable operation.
This means that even setting a password or changing simple network settings might not be possible any more, rendering the device effectively useless. See OpenWrt on 4/32 devices what you can do now.

2) OpenWrt support for this device has ended in 2022.
19.07.10 was the last official build for 4/32 devices.

Supported Versions

Version/Model	Launch Date	S/N	OpenWrt Version Supported	Model Specific Notes
A2	2005-04	-	10.03	-

Hardware Highlights

SoC	Ram	Flash	Network	USB	Serial	JTag
ADMtek ADM5120	32MiB	4MiB	1	Yes	Yes	?

Manufacturer's site: http://support.dlink.com/ProductInfo.aspx?m=DNS-120

Installation

→ downloads
→ Install OpenWrt
→ »»»»here»»»»Latest OpenWrt release««««here«««« DO NOT PROVIDE OWN LINKS to http://downloads.openwrt.org/

Flash Layout

Please check out the article flash.layout. It contains an example and a couple of explanations.

OEM easy installation

Note: Reset storage adapter to factory defaults if it has been previously configured.

Browse to http://192.168.0.101
Login
Browse to Tools>Firmware
Upload openwrt-adm5120-router_le-dns-120-squashfs-webui.bin
Wait for it to reboot
Telnet to 192.168.1.1 and set a root password, or browse to http://192.168.1.1 if LuCI is installed.

Upgrading OpenWrt

→ generic.sysupgrade

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

Browse to http://192.168.1.1/cgi-bin/luci/mini/system/upgrade/ LuCI Upgrade URL
Upload image file for sysupgrade to LuCI
Wait for reboot

Terminal Upgrade Process

Login as root via SSH on 192.168.1.1
Use the following commands to upgrade.

cd /tmp/
wget http://http://downloads.openwrt.org/snapshots/trunk/XXX/xxx.abc
sysupgrade /tmp/xxx.abc

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

cd /tmp/
wget http://http://downloads.openwrt.org/snapshots/trunk/XXX/xxx.abc
mtd write /tmp/xxx.abc linux && reboot

Basic configuration

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

Specific Configuration

Failsafe mode

→ failsafe_and_factory_reset

Buttons

→ hardware.button on howto use and configure the hardware button(s).

Hardware

Info

Instruction set:	MIPS
Vendor:	Infineon Technologies
bootloader:	ADM Bootloader
System-On-Chip:	ADM5120
CPU @Frq	MIPS 4Kc V0.11 @175MHz
Flash size:	4096 KiB
Flash Chip:	Spansion S29GL032M90
RAM size:	32 MiB
RAM Chip:	ESMT M12L128168A
USB:	Yes 2 x 2.0
Serial:	Yes

Serial

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

How to connect to the Serial Port of this specific device:

JP2

(3.3) (TxD) (RxD) (GND)

←-- LED --→ Screw + Board RSide edge

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