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Linksys WRT310N v2.0
Linksys WRT310Na




Linksys WRT310N


Linksys WRT310N v2.0






Support Chart at Bottom



NOTE: Use K2.6 only on this router.
NOTE: During configuration or flashing a device, the only that should be hooked to the device is the computer and power.



Serial Num. = CSF11
FCC ID = Q87-WRT310NV2
CPU Type = Broadcom BCM4716B0KFBG CS0908 P20 E10186 N1 (BCM4716B SoC)
MIPS Rev = R2
CPU Speed = 300MHz
Bus = ?
Flash Type = Serial
Flash Chip = ?
Flash Size = 4MB
Max Firmware Size = 3801088 bytes
RAM Size = 32MB
RAM Chip = hynix HY5DU561622FTP-D43
nvram Size = 32kb
Switch = Broadcom BCM53115SKFBG (BCM53115)
Port-based vlan = ?
802.1q vlan = ? 
Ethernet Port Count = 1-10/100/1000-WAN 4-10/100/1000-LAN
Wired Standard = IEEE 802.3/3u/3ab
boot_wait = ?
bootloader = CFE
Flash Card Socket/Type = No
SD/MMC Mod Support = No
MiniPCI slots = No
PoE = No
Power = 12V/1A
Color of LEDs = ? 
Size = 8.0" x 6.3" x 1.3"
USB = No
Serial Port = Yes
JTAG Port = Yes
Supported by TJTAG/Version = ? 
Supported by dd-wrt as of = dd-wrt.v24-13594_NEWD-2_K2.6
dd-wrt K2.4 Support = No
dd-wrt K2.6 Support = Yes
Supported by TomatoUSB as of = ?
TomatoUSB K2.4 Support = No
TomatoUSB K2.6 Support = Yes (NoUSB-Std (4MB flash) only)
Special Features = Exactly the same hardware as Cisco M20

Radio (wl0)

Wireless Radio = Broadcom BCM4716B0KFBG (BCM4716B SoC)
WLAN DSP processor = ?
Antenna Connector Type = Internal
Wireless Standard = IEEE 802.11b/g/n
WiFi Operating Frequency = 2.4GHz
 802.11n Draft (40MHz): 13.0 ± 1.5 dBm @ CH6, 25? = up to 300Mbps
 802.11n Draft (20MHz): 15.5 ± 1.5 dBm @ CH6, 25? = up to 150Mbps
 802.11g 16.5 ± 1.5 dBm @ CH 6, 25? = 6, 9, 12, 18, 24, 36, 48, 54Mbps
 802.11b 17.5 ± 1.5 dBm @ CH 6, 25? = 1, 2, 5.5, 11Mbps
Radio cor_rev = ?
Radio Capabilities = ?

Links of InterestEdit

Support Thread - dd-wrt



  1. Do a 30-30-30. Router goes into management mode.
  2. Select the option to reset the NVRAM.
  3. Select the option to reboot the router.
  4. Log into default Linksys router web control panel.
  5. Use normal Linksys firmware upgrade process to load this image
  6. Do another 30-30-30 after the upgrade. Router goes into management mode.
  7. Select the option to reboot the router.
  8. Start using DD-WRT


Fixme This section is in need of cleanup!


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

  1. Check for recommended builds here first.
  2. Set your computer to a static IP of (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.
  3. 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.
  4. Flash firmware. You can use the webgui except if you have a belkin router. (For belkin use tftp.exe to flash)
  5. least three minutes. Lights should return to normal. See important2, below. Failing to wait is how most people brick their routers.
  6. Do a power cycle of the router. (Unplug the cord, count to 30 and plug it back in.)
  7. Wait for the lights to return to normal usually about 2 minutes.
  8. 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.
  9. 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!


Fixme This section is in need of cleanup!

JTAG/Serial InfoEdit


JTAG PinoutsEdit
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
JTAG RecoveryEdit
Fixme This section is in need JTAG Recovery Instructions!


Serial PinoutsEdit
Fixme This section is in need of cleanup!
Hyper terminal Setup in Windows XPEdit
In Windows XP, Click Start Button - All Programs - Accessories - 
   Communication - HyperTerminal
Enter a name for the connection, Click ok
Choose com port you adapter is plugged into, Click ok
 Bits per second = 115200
 Data Bits = 8
 Parity = none
 Stop bits = 1
 Flow control = none
Click ok
Click File - Save As, and select a place to save it to so you 
             don't have to enter the settings again.
Putty Setup in Windows XPEdit
After installing putty, run it
 Serial line = The COM port your using for serial (ie. COM3)
 Speed = 115200
Click on Serial under Connection
 Serial line to connect to = same as above (Serial line)
 Speed (baud) = 115200
 Data bits = 8
 Stop bits = 1
 Parity = None
 Flow control = None
Click Session
 Enter a name for your connection under saved sessions
Click Save
Click Open
Serial RecoveryEdit
Fixme This section is in need of Serial Recovery Instructions!


Fixme This section is in need of cleanup!

FCC PicturesEdit

Linksys WRT310 v2.0 FCCa Linksys WRT310 v2.0 FCCb Linksys WRT310 v2.0 FCCc

Linksys WRT310 v2.0 FCCd Linksys WRT310 v2.0 FCCe Linksys WRT310 v2.0 FCCf

Linksys WRT310 v2.0 FCCg


Hardware ModificationEdit

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