Linksys WRT310N v2

Default SSID: linksys (53 addl. devices)
Default IP address: 192.168.1.1
the IP 192.168.1.1 is used by 1326 additional devices
of which 155 are Linksys devices
Default login user: admin
Default login password: admin
admin:admin credentials used by 1343 additional devices
of which 59 are Linksys devices

Manuf/OEM/ODM

CyberTAN

3rd Party Firmware Support

DD-WRT • (List)
, OpenWrt (Was)
, TomatoUSB • (List | DLs)

Retail

Availability

End of Life

(Est.) release date

10 April 2009

Physical

Dimensions

8.0" x 6.3" x 1.3"

Radio 1

Chip1

Broadcom BCM4716B0

Wireless interface OUI

00:25:9C

Antenna Connector Type

Internal

MIMO status

2x2:2

Wireless Standard

IEEE 802.11b/g/n

802.11n

up to 300 Mbps

802.11g

up to 54 Mbps

802.11b

up to 11 Mbps

WiFi Operating Frequency

2.4 GHz

Radio cor_rev

	CPU1 brand	Radio1 chip1 brand	Radio1 chip2 brand
Linksys WRT310N v1	Broadcom	Broadcom	Broadcom
Linksys WRT310N v2	Broadcom	Broadcom

For a list of all currently documented Broadcom chipsets with specifications, see Broadcom.

For a list of all currently documented Linksys device with specifications, see Linksys.

• 300 Mbps - 2SS 2.4GHz 802.11n (40MHz chan.) = N300 class

Overview

"3762-02010206R" is silkscreened on the board.

The power adapter included with the device is a Linksys AD12V/1A-SW. ID/OD/Len measurements are approximate.

Exactly the same hardware as Cisco M20

Links of Interest

On the DD-WRT forums

Flashing

NOTE: During configuration or flashing a device, the only things that should be hooked to the device is the computer and power.

Flashing dd-wrt

WARNING: Requires K2.6 for DD-WRT, Do not flash anything else!

Support started version: dd-wrt.v24-13594_NEWD-2_K2.6
Current supported version: ?

Do a 30-30-30. Router goes into management mode.
Select the option to reset the NVRAM.
Select the option to reboot the router.
Log into default Linksys router web control panel.
Use normal Linksys firmware upgrade process to load this image
dd-wrt.v24-14929_NEWD-2_K2.6_mini_wrt310nv2.bin
Do another 30-30-30 after the upgrade. Router goes into management mode.
Select the option to reboot the router.
Start using DD-WRT

Flashing OpenWrt

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.

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.

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

Devices with Broadcom WiFi chipsets have limited OpenWrt supportability (due to limited FLOSS driver availability for Broadcom chips). Consider this when choosing a device to buy, or when deciding to flash OpenWrt on your device because it is listed as supported. See Broadcom WiFi for details.

On the OpenWrt ToH (techdata entry)
On the OpenWrt Wiki
On the OpenWrt Forum
OpenWrt Target: bcm47xx
OpenWrt Subtarget: mips74k
OpenWrt Package architecture: mipsel_74kc
Support started version: 15.05
Current supported version: 22.03.7
Unsupported Functions:
WiFi 2.4GHz partly

Please insert instructions here

Flashing Tomato

Please insert instructions here

Upgrading

Updating DD-WRT

If dd-wrt is already on the router follow these instructions. If stock firmware is on the router follow the flashing instructions.

Check for recommended builds here first.
Set your computer to a static IP of 192.168.1.7. (or to whatever subnet the router is on) Disable all firewalls and security. Disable wireless on your computer and only have the router connected to the flashing computer by the ethernet cable between the two.
Hard reset or 30/30/30 (If the router supports it, if not, reset to defults in the GUI) prior to flashing. Wait. Check for password page on re-login and change password.
Flash firmware. You can use the webgui except if you have a belkin router. (For belkin use tftp.exe to flash)
Wait...at least three minutes. Lights should return to normal. See important2, below. Failing to wait is how most people brick their routers.
Do a power cycle of the router. (Unplug the cord, count to 30 and plug it back in.)
Wait for the lights to return to normal usually about 2 minutes.
Hard reset or 30/30/30 again (If the router supports it, if not, reset to defults in the GUI). Wait. Check for the password page and re-login to change the password. Then you can reconfigure your settings manually.
Once configured set your computer back to autoIP and autoDNS.

Important1: This Hard reset or 30/30/30 works fine for Asus router, but you do have to power cycle after the reset.

Important2: After you flash the firmware, and before you do the hard reset, the router will be building some nvram settings. YOU MUST WAIT FOR THIS TO FINISH PRIOR TO DOING ANYTHING WITH THE ROUTER INCLUDING A HARD RESET. Usually, you can tell when this process is completed by the WAN light coming on, but it does take several minutes. Go have a beer. There are starting to be more and more people who BRICK their routers by not waiting until the nvram is rebuilt, PRIOR to doing a hard reset. YOU NEED TO WAIT!

JTAG-Serial Info

JTAG

JTAG Pinouts

nTRST   1o o2	GND
  TDI   3o o4	GND
  TDO   5o o6	GND
  TMS   7o o8	GND
  TCK   9o o10	GND
nSRST  11o o12  N/C

Pictures

User Images

board top

TTL Serial Connection

You'll need a 3.3v capable TTL level converter like CP2102 chipset device. (find at amazon, ebay, etc) The unpopulated pads are labeled J14. Pinout is: 3.3v, TX, RX, NC?, GND. Serial settings 115200,8,N,1.