Linksys WRT310N v1

Wikidevi Notes
WRT310N v1 serial numbers begin with CSF0.

"3763-17140302R REV:XB" is silkscreened on the board.

The default SSID is linksys.

Been seen with three different flash chips
 * Eon EN29LV320AB-70TCP
 * Winbond WI9B320ABT7H
 * Samsung K8P3215UQB

Links of Interest

 * On the DD-WRT forums (high res pictures on page 3)
 * 'jtag wrt310n' on the DD-WRT forums (additional pictures)
 * Router screenshots on the DD-WRT forums (OUI 00:22:6B)

Flashing DD-WRT
Linksys WRT310N v1.0

The WRT310N accepts only the mini, standard, and VPN builds; no other versions are supported on this device. Do not even attempt to flash it with the micro (does not support gigabit ethernet so switch will not work for LAN ports) or mega-build (requires 8MB of flash, WRT310N only has 4MB), you will end up with a non-responding router or worse, a very expensive brick! Flashing a virgin WRT310N with the default Linksys firmware will require a special "trailed" mini-build to be flashed first. You should use a build from the BS Broadcom folder 12874 for the initial flash. The name of this file specifically is "dd-wrt.v24_mini_wrt310n.bin". You may proceed to flash it with a generic STD or VPN build next. Remember to do the 30/30/30 Hard Reset after every successful flash. It is absolutely essential.

The proper process for flashing is:


 * 1) Read Note 1 of the peacock announcement http://www.dd-wrt.com/phpBB2/viewtopic.php?t=51486
 * 2) Read Note 3 of the peacock announcement
 * 3) Download svn 12874 dd-wrt.v24_mini_wrt310n.bin ftp://dd-wrt.com/others/eko/BrainSlayer-V24-preSP2/09-08-09-r12874/broadcom/dd-wrt.v24_mini_wrt310n.bin
 * 4) Do a HARD reset on your router. You will not get a password renewal page as you have stock linksys firmware on the router still.
 * 5) Plug a cable into the lan port of the router and your computer, and disable any wireless to the computer. Disable all firewalls and virus protection. (Setting your computer to a static IP should not be required)
 * 6) Set your browser to 192.168.1.1. This will open up the linksys webgui
 * 7) Enter the username admin and password admin
 * 8) Go to the administration tab. Click on firmware upgrade.
 * 9) BROWSE to the dd-wrt.v24_mini_wrt310n.bin file you downloaded.
 * 10) Click on the upgrade button and WAIT for the upgrade successful message.
 * 11) Power cycle your router. (very important) WAIT until you can relogin at 192.168.1.1
 * 12) Do a PROPER HARD 30-30-30 reset on your router (very important) WAIT until you can login at 192.168.1.1
 * 13) Click on any tab. Reset your username/password by TYPING in a new username/password
 * 14) Configure your router

You can now upgrade to any generic dd-wrt build except Mega and Micro. Be sure to always do a hard reset prior to flashing another build, do a power cycle followed by another hard reset after flashing, and NEVER re-use a configuration file from a previous build or another router. Reconfigure from scratch. Recovery information available in this thread.

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

JTAG Recovery
 /fc:19 in TJTAG to recognize flash

Serial Pinouts
 VCC 1 o  TX  2 o  RX  3 o N/C  4 o GND  5 o

DD-WRT Serial Recovery
Modified Redhawk0 instructions


 * 1) Connect Serial cable
 * 2) start a rapid fire Cntl-C as you plug the router to power
 * 3) nvram erase
 * 4) flash -noheader : flash1.trx
 * 5) but have tftp.exe ready
 * 6) flash -noheader : flash1.trx starts the tftp daemon
 * 7) Use Readhawk0's dd-wrt.v24_mini_wrt310N.bin
 * 8) give it 5 minutes after it finishes
 * 9) then power cycle....hard reset...then config
 * 10) when it stops spitting out txt....hit the enter key...you should get a login prompt...at that point, power cycle it, hard reset...then config
 * 11) you'll see it boot up

Pictures
Cisco's Images

Changing from Passive Cooling to Active Cooling
Raptor2213 noticed that after uploading DD-WRT firmware that his first-gen WRT-310N kept overheating. Possible solutions include:
 * 1)  Strap a 120mm fan on the bottom of the router (make sure to use feet to keep it off the ground).
 * 2)  Mod your WRT-310N to use an active cooler.