Netgear WNDR3700

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(New page: ==Installation of DD-WRT== The Netgear WNDR3700 is an extremely powerful consumer 802.11a/b/g/n router, sporting a lightning fast Atheros CPU, lots of RAM, lots of flash space, and capabl...)
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Revision as of 06:18, 30 July 2010


Installation of DD-WRT

The Netgear WNDR3700 is an extremely powerful consumer 802.11a/b/g/n router, sporting a lightning fast Atheros CPU, lots of RAM, lots of flash space, and capable of high transmit power that even gives 2Wire a run for the money makes this router is ready for the future, and DD-WRT makes it even better. Installation of DD-WRT is very simple and can be done in a few steps.

1. Download DD-WRT for the WNDR3700 from here:

2. Make sure you are connected to the router with an ethernet cable. Then upgrade your firmware through the stock firmware web interface, the process will take a few minutes. Do not interrupt the upgrade process and wait at least 2 minutes after 100% is reached.

3. The wireless LEDs should now be flashing, and if your NIC card is gigabit, you should also see one orange LAN led, if you see these your flash is complete and you can now proceed to the 30/30/30 or triple 30 reset.

4. Hold the reset button under the router for 30 seconds and do not release it, while still holding the reset button unplug the router and leave it unplugged for 30 more seconds. Still holding the reset button, plug the router back in and wait yet another 30 seconds. Unplug the router again and release the reset button, plug it back in and wait at least 2 minutes, this is critical as the router is building NVRAM settings.

5. Repeat step 4 one final time.

6. Power cycle the router, unplug it for 30 seconds and plug it back in, or use the switch. Installation is now complete.

To upgrade to a newer build of DD-WRT, use the web interface and selecting the "wndr3700-webflash.bin" file instead.

Now that DD-WRT is fully installed and NVRAM is cleared, ensure your PC does not have any internal static IP then point your browser to, this is the DD-WRT default IP and can be changed to any IP you like. You should be at the username and password screen, set them accordingly then proceed to setting up your new DD-WRT WNDR3700.

Known Issues

Since DD-WRT is still in beta there is some issues with the WNDR3700, having followed the proper safe procedure above, you should have minimal or no issues. If luck is not on your side then take a look at the current known most critical issues and fixes for them if there is any.

Issue 1

There has been several reports of very weak ath0/ath1 (both radios 2.4GHz and 5GHz) after flashing DD-WRT, but there is also reports of weak wireless with those that never flashed DD-WRT. The issue is still under investigation but it is probably faulty hardware related, one can only speculate the cause but it could be TX power related. Owners with this problem report the wireless is so weak one can't move any further away from the router than 1 meter.

Fix: None short of exchanging the router for another one.

Issue 2

Some report 802.11n 300 Mbps clients loose speed and slow to 130 Mbps in only a few minutes after connection. Most likely related to the weak wireless issue.

Fix: None.

Issue 3

Some report MAC addresses changing to FF:FF:FF:FF:FF:FF, this can be caused by a improper flash. Reflash following the steps above before attempting the fix.


Router Specifications

CPU: AR7161 680 MHz

RAM: 64 MB

Flash: 8 MB

Switch: Realtek RTL8366SR

Radio (2.4 GHz): AR9220

Radio (5 GHz): AR9223

Antenna Type: Internal

# Of Antennas: 8

Antenna Gain (2.4 GHz): 2.8dBi

Antenna Gain (5 GHz): 3.9dBi

Max TX Power (2.4 GHz): 22dBm with HT40, 26dBm with HT20, 27dBm with HT20 + G-Only

Max TX Power (5 GHz): 24dBm

Antenna Chains: 1+2, 1+2