Netgear WNDR3700

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 +{{Languages|Netgear WNDR3700}}
 +
[[Image:Netgear-WNDR3700.jpg | right | 180px]] [[Image:Netgear-WNDR3700.jpg | right | 180px]]
==Versions== ==Versions==
-The Netgear WNDR3700 is a powerful consumer simultaneous dual band 802.11 a/b/g/n router, sporting a fast Atheros(v1, v2 & v4) or Broadcom CPU(v3), lots of RAM & flash space, high routing performance, high transmit power capability, and a USB port.+The Netgear WNDR3700 is a powerful consumer simultaneous dual band 802.11 a/b/g/n router, sporting a fast Qualcomm Atheros (v1, v2, v4), Broadcom (v3), or Mediatek CPU (v5), good routing performance and transmit power capability, and a USB 2.0 port. To date there are 5 hardware revisions of this router, v1, v2, v3, v4, and v5. v5 is not supported and there is no ETA, each of which requires its own firmware build, whether you use stock firmware or DD-WRT. Installation of DD-WRT is very simple and can be done in a few steps.
- +
-Installation of DD-WRT is very simple and can be done in a few steps.+
- +
-To date there are four hardware revisions of this router, v1, v2, v3, and v4, each of which requires its own firmware build, whether you use stock firmware or DD-WRT.+
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v1 units are not labeled at all and are just called "WNDR3700". v1 units are not labeled at all and are just called "WNDR3700".
-Download DD-WRT for the WNDR3700 '''v1''' from here depending on the region you purchased your outer from: +See [[Index:FAQ#Where_do_I_download_firmware.3F|Where do I download firmware?]] for links.
-North America (NA): ftp://ftp.dd-wrt.com/betas/2014/11-07-2014-r25279/netgear-wndr3700/wndr3700-factory_NA.img+Download DD-WRT for the WNDR3700 '''v1''' depending on the region you purchased your router from:
-World Wide (WW): ftp://ftp.dd-wrt.com/betas/2014/11-07-2014-r25279/netgear-wndr3700/wndr3700-factory.img 
-Web Flash BIN (Both): ftp://ftp.dd-wrt.com/betas/2014/11-07-2014-r25279/netgear-wndr3700/wndr3700-webflash.bin+North America (NA): Go to the netgear-wndr3700 folder then download the wndr3700-factory_NA.img file
-'''Note''': If you try to install DD-WRT on v1 with initial factory firmware (1.0.4.31NA), the upload will fail with "Invalid file name!" Work-around for this problem is to first upgrade to a later version of factory firmware (e.g., 1.0.7.98NA) before installing DD-WRT.+World Wide (WW): Go to the netgear-wndr3700 folder then download the wndr3700-factory.img file
 +Web Flash BIN (Both) to upgrade dd-wrt: Go to the netgear-wndr3700 folder then download the wndr3700-webflash.bin file
 +
 +
 +====Note====
 +If you try to install DD-WRT on v1 with initial factory firmware (1.0.4.31NA), the upload will fail with "Invalid file name!" Work-around for this problem is to first upgrade to a later version of factory firmware (e.g., 1.0.7.98NA) before installing DD-WRT.
 +
 +Please note, a smaller sized build will be required for the first flash, as newer ones (2018+) are too large for the factory sized linux partition. Success for the initial DD-WRT build was found using r29059 (a 2016 build). Then upgrade to the latest version of DD-WRT using the webflash file.
 +
 +
 +Version 35681 4/6/2018 has been confirmed to work [https://dd-wrt.com/support/other-downloads/?path=betas%2F2018%2F04-06-2018-r35681%2Fnetgear-wndr3700%2F|here] by [[User:tmittelstaedt|tmittelstaedt]] on the version 1 Netgear 3700.
---- ----
===v2=== ===v2===
-v2 units are labeled on the side of the box and in firmware as "WNDR3700'''v2'''".+v2 units are labeled on the side of the box, in firmware, & under the router as "WNDR3700'''v2'''".
 + 
 +See [[Index:FAQ#Where_do_I_download_firmware.3F|Where do I download firmware?]] for links.
If you have a WNDR3700 '''v2''', download from here following the same flashing steps: If you have a WNDR3700 '''v2''', download from here following the same flashing steps:
-North America (NA): ftp://ftp.dd-wrt.com/betas/2014/11-07-2014-r25279/netgear-wndr3700v2/wndr3700v2-factory_NA.img+North America (NA): Go to the netgear-wndr3700v2 folder then download the wndr3700v2-factory_NA.img file
-World Wide (WW): ftp://ftp.dd-wrt.com/betas/2014/11-07-2014-r25279/netgear-wndr3700v2/wndr3700v2-factory.img+World Wide (WW): Go to the netgear-wndr3700v2 folder then download the wndr3700v2-factory.img file
-Web Flash BIN (Both): ftp://ftp.dd-wrt.com/betas/2014/11-07-2014-r25279/netgear-wndr3700v2/wndr3700v2-webflash.bin+Web Flash BIN (Both) to upgrade dd-wrt: Go to the netgear-wndr3700v2 folder then download the wndr3700v2-webflash.bin file
-'''Note''': You must have no later than 1.0.0.12 of the netgear factory firmware in order to flash dd-wrt to this unit. Netgear has put a check in later firmware revisions (as with the WNDR3800) to see if you are not using their firmware and will fail. http://www.dd-wrt.com/phpBB2/viewtopic.php?p=731615#731615+'''Note''': You must have no later than 1.0.0.12 of the netgear factory firmware in order to flash dd-wrt to this unit. Netgear has put a check in later firmware revisions to see if you are not using their firmware and will fail. http://www.dd-wrt.com/phpBB2/viewtopic.php?p=731615#731615
---- ----
===v3=== ===v3===
-v3 units are labeled on the side of the box and in firmware as "WNDR3700'''v3'''".+v3 units are labeled on the side of the box, in firmware, & under the router as "WNDR3700'''v3'''".
-If you have a WNDR3700 '''v3''', download from here flashing the trailed build:+Initial Flash: From the WNDR3700'''v3''' OEM GUI, flash a k2.6 trailed build (broadcom_K26 folder):<br>
 +''K2.6_mini-WNDR3700v3.chk'' [See [[Index:FAQ#Where_do_I_download_firmware.3F|Where do I download firmware?]] for links]
-Trailed Build (World Wide (WW)): ftp://ftp.dd-wrt.com/betas/2014/11-07-2014-r25279/broadcom_K26/dd-wrt.v24-25279_NEWD-2_K2.6_mini-WNDR3700v3.chk+Upgrade Builds: Use nv64k.bin (or trailed) builds. This is a Broadcom unit with 64k nvram, identical to WNDR4000.
 +*K3.X builds do work on this unit but you must first flash K2.6, as there is no mini K3.X build.
-Upgrade Builds: This unit is broadcom based and has 64k of nvram. Use nv64k.bin firmware versions.+Ensure mega builds are '''less than 7995392 bytes (7808 KB) in size''' before flashing or you will brick the unit.
-Stay with K2.6 unless you know what you're doing.+
---- ----
===v4=== ===v4===
-v4 units are labeled on the side of the box and in firmware as "WNDR3700'''v4'''".+v4 units are labeled on the side of the box, in firmware, & under the router as "WNDR3700'''v4'''".<br>
 +<font color=red>If you flash with a factory img file newer than r23503, stock firmware will give a ''cgi timeout error''. Use the r23503 factory file to get on DD-WRT first, then use the webflash below to be updated to the latest build.</font>
-If you have a WNDR3700 '''v4''', download from here following the same flashing steps:+If you have a WNDR3700'''v4''', download from here following the same flashing steps:
 +*Initial flash: [ftp://ftp.dd-wrt.com/betas/2014/02-04-2014-r23503/netgear-wndr3700v4/wndr3700v4-factory.img 23503 wndr3700v4-factory.img]
 +*Upgrade: [ftp://ftp.dd-wrt.com/betas/2017/10-20-2017-r33555/netgear-wndr3700v4/wndr3700v4-webflash.bin 33555 wndr3700v4-webflash.bin]
 +See [[Index:FAQ#Where_do_I_download_firmware.3F|Where do I download firmware?]] for up to date builds, and the forum for build recommendations.
-World Wide (WW): ftp://ftp.dd-wrt.com/betas/2014/11-06-2014-r25273/netgear-wndr3700v4/wndr3700v4-factory.img+====Reset====
 +Do not 30/30/30 reset, and GUI ''Factory Defaults'' reset may not work.<br>
 +Reset via Telnet/SSH if needed: `erase nvram && reboot`
 +Reference: [https://www.dd-wrt.com/phpBB2/viewtopic.php?p=1121615#1121615 forum thread]
-Web Flash BIN (Both): ftp://ftp.dd-wrt.com/betas/2014/11-06-2014-r25273/netgear-wndr3700v4/wndr3700v4-webflash.bin+====Recovery for v4====
 +If the unit is soft-bricked (flashing power light) then:
 +*TFTP build r23503 wndr3700v4.img to it at 192.168.1.1
 +**Reset is not necessary, but if wanted see the Reset section above
 +*After it boots, load the webif (at the previously set IP address if no reset), then install the last working build
 +To TFTP when not bricked, [https://www.dd-wrt.com/phpBB2/viewtopic.php?p=843259#843259 power-up holding the reset button] to TFTP:
 +#Set a static IP (e.g. IP address 192.168.1.9, subnet mask 255.255,255.0, default gateway 192.168.1.1)
 +#In a TFTP client, use 192.168.1.1 as server, password blank, select above DD or OEM Netgear firmware
 +#Don't start TFTP yet...open a cmd window, run `ping -t 192.168.1.1` (for Windows; no '-t' for linux)
 +#Press and hold the reset button and power up the router. Start the TFTP when ping replies with TTL
 +#*The thread says to look for TTL=100, but this has also worked when TTL=64 is seen
 +#It should push the firmware, then wait and watch the lights and the pings.
 +#After a few reboots, with consistent ping, access the router on routerlogin.net (192.168.1.1 unless in use)
-==DD-WRT Installation==+MTD backups: [http://mrjcd.com/junk/dd-wrt/WNDR3700v4/MTD_parts/ mtd partitions and DD-WRT boot log]. '''Use at your own risk!'''
-* '''Initial Reset''':+----
-** Power on the router, and wait for status light to go solid green+
-** Press and hold the Reset button for at least 20 seconds or until the lights start flashing+
-** Release the Reset button and wait until the router status light goes solid green again+
-* '''Flashing''': Make sure you are connected to the router with an Ethernet cable. <font color=red>(Do not flash over a wireless connection.)</font> Then upgrade to DD-WRT firmware through the router's Web interface. The process will take a few minutes. <font color=red>Do not interrupt the upgrade process -- '''wait at least 2 minutes after 100% is reached'''. </font>+===v5===
 +'''v5 is not supported''' and probably will never be due to the Mediatek SoC.<br>
 +v5 units are labeled on the side of the box, in firmware, & under the router as "WNDR3700'''v5'''".
-* '''Checking''': Wait while the router reboots. The lights should flash, and eventually the status light should go solid green. Then open http://192.168.1.1 in a Web browser, and if a DD-WRT screen appears, flashing is complete and successful.+==DD-WRT Installation (Other info)==
 +See version specific info above first.
-* '''30/30/30 Reset''':+See [[Installation|Installation info]].
-**Press and hold the Reset button for 30 seconds. Do not release it.+
-**While still holding the reset button, <font color=red>'''unplug'''</font> 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 <font color=red>'''wait at least 2 minutes'''</font>. This is critical as the router is building NVRAM settings.+
 +To restore from the brick TFTP the stock firmware or a known working build of DD-WRT back from it (-factory.img file). To upgrade to a newer build of DD-WRT, use the web interface and selecting the "wndr3700-webflash.bin" file instead. Also, if you do partially brick your router, use [[TFTP_flash#Special_for_Vista.2C_Win7_and_Win_2008 this page|Special TFTP instructions for Win 7+]] to unbrick it.
-The webflash.bin doesn't work on some WNDR3700's and could brick the router, but most are fine. Most likely cause the router is faulty to begin with. To restore from the brick TFTP the stock firmware or a known working build of DD-WRT back from it (-factory.img file).+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 192.168.1.1, 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 DD-WRT.
- +
- +
-To upgrade to a newer build of DD-WRT, use the web interface and selecting the "wndr3700-webflash.bin" file instead. eg from: [ftp://ftp.dd-wrt.com/others/eko/BrainSlayer-V24-preSP2/10-26-10-r15506/netgear-wndr3700/] +
-<font color=red>Do not select "restore defaults"</font> or you may have a [http://www.dd-wrt.com/phpBB2/viewtopic.php?t=76805 semi bricked device]. There has been many reports of "restore defaults" bricking multiple different routers yet some have no issue, so <font color=red>USE AT YOUR OWN RISK!</font> You should not have to restore to defaults just from upgrading builds, to restore to defaults instead use the far superior [http://www.dd-wrt.com/wiki/index.php/Hard_reset_or_30/30/30 triple 30 reset]. Also, if you do partially brick your router, use [http://www.dd-wrt.com/wiki/index.php/TFTP_flash#Special_for_Vista.2C_Win7_and_Win_2008 this page] to unbrick it.+
- +
- +
-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 192.168.1.1, 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.+
*NOTE: Some people have run into problems following the directions above, usually due to waiting only a few seconds after sending the firmware to the unit to flash, when its not finished flashing the unit probably gets reset or loss of power. This forum thread describes an alternative method - http://www.dd-wrt.com/phpBB2/viewtopic.php?t=140667&postdays=0&postorder=asc&start=30 *NOTE: Some people have run into problems following the directions above, usually due to waiting only a few seconds after sending the firmware to the unit to flash, when its not finished flashing the unit probably gets reset or loss of power. This forum thread describes an alternative method - http://www.dd-wrt.com/phpBB2/viewtopic.php?t=140667&postdays=0&postorder=asc&start=30
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==Known Issues== ==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. 
----- 
-===Weak Radios=== +===Weak Radios (v1 only)===
There has been some reports of very weak radios (both 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 seems to be faulty hardware, a fairly large bad batch off the assembly line (see "fix" below). Owners with this problem report the wireless is so weak one can't move any further away from the router than 1 meter. A [http://spreadsheets.google.com/pub?key=0AjNDNODfzgytdEJvZ0N0SkFLejFJZzBHcnFaaUg4OGc&hl=en&output=html chart has been made] by a WNDR3700 owner that is linked at the bottom of this page, you have over 85% chance to get a good working router. See this thread on netgear forums for some low S/N information: There has been some reports of very weak radios (both 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 seems to be faulty hardware, a fairly large bad batch off the assembly line (see "fix" below). Owners with this problem report the wireless is so weak one can't move any further away from the router than 1 meter. A [http://spreadsheets.google.com/pub?key=0AjNDNODfzgytdEJvZ0N0SkFLejFJZzBHcnFaaUg4OGc&hl=en&output=html chart has been made] by a WNDR3700 owner that is linked at the bottom of this page, you have over 85% chance to get a good working router. See this thread on netgear forums for some low S/N information:
http://forum1.netgear.com/showthread.php?t=54442 http://forum1.netgear.com/showthread.php?t=54442
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According to this thread TA numbers ending in 01R15 are likely to be bad. 01R17 are better, 07R18 is 50/50, and it appears 01R21+ are usually fine. Anything starting with 02R is from the "2nd generation" and no issues have been reported with the 2.4Ghz/5.0Ghz bands. According to this thread TA numbers ending in 01R15 are likely to be bad. 01R17 are better, 07R18 is 50/50, and it appears 01R21+ are usually fine. Anything starting with 02R is from the "2nd generation" and no issues have been reported with the 2.4Ghz/5.0Ghz bands.
-'''Fix:''' None short of exchanging the router for another one. +'''Fix:''' Exchanging the router for another one.
---- ----
===MAC Address=== ===MAC Address===
-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. If reflashing did not fix the problem replacing caldata should, see fix link.+Some report MAC addresses changing to FF:FF:FF:FF:FF:FF, this is caused by a improper flash. Reflash following the steps above before attempting the fix. If reflashing did not fix the problem replacing caldata should, see fix link.
- +
- +
-'''Fix:''' http://www.dd-wrt.com/phpBB2/viewtopic.php?p=468313#468313 (updated)+
- +
-http://www.dd-wrt.com/phpBB2/viewtopic.php?p=453998#453998 (original)+
 +'''Fix:''' http://www.dd-wrt.com/phpBB2/viewtopic.php?p=468313#468313 (whole thread overall has lots of info)
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! v3 ! v3
! v4 ! v4
 +! v5
|- |-
! CPU ! CPU
-| Atheros AR7161 680MHz +| Atheros AR7161 680 MHz
-| Atheros AR7161 680MHz +| Atheros AR7161 680 MHz
-| Broadcom BCM4718A1 480MHz +| Broadcom BCM4718A1 480 MHz
-| Atheros AR9344 560MHz +| Atheros AR9344 560 MHz
 +| Mediatek MT7621S 880 MHz
|- |-
! RAM ! RAM
-| 64MB +| 64 MB
-| 64MB +| 64 MB
-| 64MB +| 64 MB
-| 128MB +| 128 MB
 +| ?? TODO
|- |-
! Flash ! Flash
-| 8MB +| 8 MB
-| 16MB +| 16 MB
-| 8MB +| 8 MB
-| 128MB +| 128 MB
 +| ?? TODO
|- |-
! Switch ! Switch
-| Realtek RTL8366SR +| Realtek RTL8366SR
-| Realtek RTL8366SR +| Realtek RTL8366SR
| Broadcom BCM53115 | Broadcom BCM53115
-| Atheros AR9344+| Atheros AR8327
 +| Mediatek MT7621ST
|- |-
! Radios (2.4/5 GHz) ! Radios (2.4/5 GHz)
-| Atheros AR9223 / Atheros AR9220 +| Atheros AR9223 / Atheros AR9220
-| Atheros AR9223 / Atheros AR9220 +| Atheros AR9223 / Atheros AR9220
-| Broadcom BCM4718A1 SOC / Broadcom BCM4331 +| Broadcom BCM4718A1 SOC / Broadcom BCM4331
-| Atheros AR9344 / Atheros AR9582 +| Atheros AR9344 SOC / Atheros AR9582
 +| ??/?? TODO
|- |-
! Max TX Power (2.4/5 GHz) ! Max TX Power (2.4/5 GHz)
| 17 dBm / 24 dBm | 17 dBm / 24 dBm
| 17 dBm / 24 dBm | 17 dBm / 24 dBm
-| 251 mW(?) / 251 mW(?) +| 251 mW / 251 mW
| 26 dBm / 22 dBm | 26 dBm / 22 dBm
 +| ??/?? TODO
|} |}
-Max TX Power assumes 40 MHz channel width and regulatory domain of Canada/USA/Singapore. Under 20 MHz operation 2.4 GHz may have higher TX power due to reduced channel width.+Max TX Power assumes used regulatory domain is Canada/USA/Haiti. Others may or may not allow higher TX powers (up to 30 dBm/1000 mW).
==FAQ== ==FAQ==
-'''Q: After flashing DD-WRT, the LAN LEDs are now green for 10/100M and orange 1000M?'''+See [[Firmware_FAQ|Firmware FAQ]] first before posting a question in the forums.
 + 
 +'''Q: After flashing DD-WRT, the LAN LEDs are now green for 10/100M and orange 1000M? (v1/v2 only)'''
''A: This is an intentional change by the DD-WRT developers, Netgear had the colors backwards as gigabit is usually orange (check any other NIC!). ''A: This is an intentional change by the DD-WRT developers, Netgear had the colors backwards as gigabit is usually orange (check any other NIC!).
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---- ----
-'''Q: Is there going to be a special version after DD-WRT is out of beta for this router?'''+'''Q: Is there going to be a special version of DD-WRT for this router?'''
-''A: Maybe, maybe not. Probably not because Netgear already paid for special support *for us*, this is why WNDR3700 has extra features such as RP-PPPOE server and per user/subnet/MAC QoS speed control as these are special build features.+''A: No, there are no special versions anymore except for Buffalo routers.
'' ''
----- 
- 
-'''Q: My wireless performance dropped after installing DD-WRT?''' 
- 
-''A: Refer to the [http://www.dd-wrt.com/wiki/index.php/Atheros/ath_wireless_settings Atheros wireless settings wiki page], you are probably using defaults or incorrect settings.'' 
- 
----- 
- 
-'''Q: What is the default username and password for DD-WRT?''' 
- 
-''A: Username is "root" and password is "admin".'' 
- 
----- 
- 
-'''Q: With stock firmware I was able to setup a guest AP or virtual AP, can I do this as well with DD-WRT? 
-''' 
- 
-''A: Absolutely, and much more!'' 
----- 
- 
-'''Q: How come I cannot get 802.11n 300Mbps speeds with a 300Mbps client? 
-''' 
- 
-''A: You '''must''' use WPA2 AES when encrypting your wireless connection, or have no security, otherwise the router will fallback to 802.11a/g speeds as WPA2 AES is a mandatory requirement of 802.11n specification as WPA2 AES is the only approved encryption method in the Wireless-N standard.'' 
---- ----
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==Useful Information== ==Useful Information==
- +*[http://www.dd-wrt.com/phpBB2/viewtopic.php?t=53016 WNDR3700 thread] with varied information
-*Refer to this [http://www.dd-wrt.com/wiki/index.php/QCA_wireless_settings wiki article] for a guide to wireless settings for Qualcomm Atheros.+[https://www.dd-wrt.com/phpBB2/viewtopic.php?t=308922 WNDR3700v2 broken reset button]
- +*[https://www.dd-wrt.com/phpBB2/viewtopic.php?t=164508 WNDR3700v4 thread] including boot log
-*Refer to [http://www.dd-wrt.com/phpBB2/viewtopic.php?t=53016 this thread] containing various info regarding WNDR3700.+*[http://forum1.netgear.com/showthread.php?t=54442 Different WNDR3700 revisions] & the weak wireless problem
- +*[http://www.dd-wrt.com/phpBB2/viewtopic.php?t=79802 Guide to restore Netgear factory firmware]
-*Refer to [http://forum1.netgear.com/showthread.php?t=54442 this thread] about the possibility of different revisions of the WNDR3700, weak wireless problem could be tied to revision.+*[http://g300nh.blogspot.com/2010/06/software-installation-on-dd-wrt-part-1.html Installation and tips on USB-enabled Atheros routers]
- +*[http://www.dd-wrt.com/phpBB2/viewtopic.php?t=70462 Guide on compiling kernel modules]
-*Refer to [http://www.dd-wrt.com/phpBB2/viewtopic.php?t=79802 this thread] for a guide to restoring the Netgear factory firmware.+
- +
-*Software Installation on USB enabled Atheros routers [http://g300nh.blogspot.com/2010/06/software-installation-on-dd-wrt-part-1.html]+
- +
-*Refer to [http://www.dd-wrt.com/phpBB2/viewtopic.php?t=70462 this thread ] for a guide compiling kernel modules+
= Unbricking = = Unbricking =

Current revision


Contents

[edit] Versions

The Netgear WNDR3700 is a powerful consumer simultaneous dual band 802.11 a/b/g/n router, sporting a fast Qualcomm Atheros (v1, v2, v4), Broadcom (v3), or Mediatek CPU (v5), good routing performance and transmit power capability, and a USB 2.0 port. To date there are 5 hardware revisions of this router, v1, v2, v3, v4, and v5. v5 is not supported and there is no ETA, each of which requires its own firmware build, whether you use stock firmware or DD-WRT. Installation of DD-WRT is very simple and can be done in a few steps.


Note: factory.img is for worldwide units flashing from NETGEAR firmware to DD-WRT, or recovering from TFTP mode. factory_NA.img is the same except for North American units. Webflash is from upgrading an existing DD-WRT firmware to a newer build via update firmware option.


[edit] v1

v1 units are not labeled at all and are just called "WNDR3700".

See Where do I download firmware? for links.

Download DD-WRT for the WNDR3700 v1 depending on the region you purchased your router from:


North America (NA): Go to the netgear-wndr3700 folder then download the wndr3700-factory_NA.img file

World Wide (WW): Go to the netgear-wndr3700 folder then download the wndr3700-factory.img file

Web Flash BIN (Both) to upgrade dd-wrt: Go to the netgear-wndr3700 folder then download the wndr3700-webflash.bin file


[edit] Note

If you try to install DD-WRT on v1 with initial factory firmware (1.0.4.31NA), the upload will fail with "Invalid file name!" Work-around for this problem is to first upgrade to a later version of factory firmware (e.g., 1.0.7.98NA) before installing DD-WRT.

Please note, a smaller sized build will be required for the first flash, as newer ones (2018+) are too large for the factory sized linux partition. Success for the initial DD-WRT build was found using r29059 (a 2016 build). Then upgrade to the latest version of DD-WRT using the webflash file.


Version 35681 4/6/2018 has been confirmed to work [1] by tmittelstaedt on the version 1 Netgear 3700.


[edit] v2

v2 units are labeled on the side of the box, in firmware, & under the router as "WNDR3700v2".

See Where do I download firmware? for links.

If you have a WNDR3700 v2, download from here following the same flashing steps:

North America (NA): Go to the netgear-wndr3700v2 folder then download the wndr3700v2-factory_NA.img file

World Wide (WW): Go to the netgear-wndr3700v2 folder then download the wndr3700v2-factory.img file

Web Flash BIN (Both) to upgrade dd-wrt: Go to the netgear-wndr3700v2 folder then download the wndr3700v2-webflash.bin file

Note: You must have no later than 1.0.0.12 of the netgear factory firmware in order to flash dd-wrt to this unit. Netgear has put a check in later firmware revisions to see if you are not using their firmware and will fail. http://www.dd-wrt.com/phpBB2/viewtopic.php?p=731615#731615


[edit] v3

v3 units are labeled on the side of the box, in firmware, & under the router as "WNDR3700v3".

Initial Flash: From the WNDR3700v3 OEM GUI, flash a k2.6 trailed build (broadcom_K26 folder):
K2.6_mini-WNDR3700v3.chk [See Where do I download firmware? for links]

Upgrade Builds: Use nv64k.bin (or trailed) builds. This is a Broadcom unit with 64k nvram, identical to WNDR4000.

  • K3.X builds do work on this unit but you must first flash K2.6, as there is no mini K3.X build.

Ensure mega builds are less than 7995392 bytes (7808 KB) in size before flashing or you will brick the unit.


[edit] v4

v4 units are labeled on the side of the box, in firmware, & under the router as "WNDR3700v4".
If you flash with a factory img file newer than r23503, stock firmware will give a cgi timeout error. Use the r23503 factory file to get on DD-WRT first, then use the webflash below to be updated to the latest build.

If you have a WNDR3700v4, download from here following the same flashing steps:

See Where do I download firmware? for up to date builds, and the forum for build recommendations.

[edit] Reset

Do not 30/30/30 reset, and GUI Factory Defaults reset may not work.
Reset via Telnet/SSH if needed: `erase nvram && reboot` Reference: forum thread

[edit] Recovery for v4

If the unit is soft-bricked (flashing power light) then:

  • TFTP build r23503 wndr3700v4.img to it at 192.168.1.1
    • Reset is not necessary, but if wanted see the Reset section above
  • After it boots, load the webif (at the previously set IP address if no reset), then install the last working build

To TFTP when not bricked, power-up holding the reset button to TFTP:

  1. Set a static IP (e.g. IP address 192.168.1.9, subnet mask 255.255,255.0, default gateway 192.168.1.1)
  2. In a TFTP client, use 192.168.1.1 as server, password blank, select above DD or OEM Netgear firmware
  3. Don't start TFTP yet...open a cmd window, run `ping -t 192.168.1.1` (for Windows; no '-t' for linux)
  4. Press and hold the reset button and power up the router. Start the TFTP when ping replies with TTL
    • The thread says to look for TTL=100, but this has also worked when TTL=64 is seen
  5. It should push the firmware, then wait and watch the lights and the pings.
  6. After a few reboots, with consistent ping, access the router on routerlogin.net (192.168.1.1 unless in use)

MTD backups: mtd partitions and DD-WRT boot log. Use at your own risk!


[edit] v5

v5 is not supported and probably will never be due to the Mediatek SoC.
v5 units are labeled on the side of the box, in firmware, & under the router as "WNDR3700v5".

[edit] DD-WRT Installation (Other info)

See version specific info above first.

See Installation info.

To restore from the brick TFTP the stock firmware or a known working build of DD-WRT back from it (-factory.img file). To upgrade to a newer build of DD-WRT, use the web interface and selecting the "wndr3700-webflash.bin" file instead. Also, if you do partially brick your router, use Special TFTP instructions for Win 7+ to unbrick it.

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 192.168.1.1, 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 DD-WRT.

[edit] Known Issues

[edit] Weak Radios (v1 only)

There has been some reports of very weak radios (both 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 seems to be faulty hardware, a fairly large bad batch off the assembly line (see "fix" below). Owners with this problem report the wireless is so weak one can't move any further away from the router than 1 meter. A chart has been made by a WNDR3700 owner that is linked at the bottom of this page, you have over 85% chance to get a good working router. See this thread on netgear forums for some low S/N information: http://forum1.netgear.com/showthread.php?t=54442

According to this thread TA numbers ending in 01R15 are likely to be bad. 01R17 are better, 07R18 is 50/50, and it appears 01R21+ are usually fine. Anything starting with 02R is from the "2nd generation" and no issues have been reported with the 2.4Ghz/5.0Ghz bands.

Fix: Exchanging the router for another one.


[edit] MAC Address

Some report MAC addresses changing to FF:FF:FF:FF:FF:FF, this is caused by a improper flash. Reflash following the steps above before attempting the fix. If reflashing did not fix the problem replacing caldata should, see fix link.

Fix: http://www.dd-wrt.com/phpBB2/viewtopic.php?p=468313#468313 (whole thread overall has lots of info)


[edit] Specifications

Feature v1 v2 v3 v4 v5
CPU Atheros AR7161 680 MHz Atheros AR7161 680 MHz Broadcom BCM4718A1 480 MHz Atheros AR9344 560 MHz Mediatek MT7621S 880 MHz
RAM 64 MB 64 MB 64 MB 128 MB  ?? TODO
Flash 8 MB 16 MB 8 MB 128 MB  ?? TODO
Switch Realtek RTL8366SR Realtek RTL8366SR Broadcom BCM53115 Atheros AR8327 Mediatek MT7621ST
Radios (2.4/5 GHz) Atheros AR9223 / Atheros AR9220 Atheros AR9223 / Atheros AR9220 Broadcom BCM4718A1 SOC / Broadcom BCM4331 Atheros AR9344 SOC / Atheros AR9582  ??/?? TODO
Max TX Power (2.4/5 GHz) 17 dBm / 24 dBm 17 dBm / 24 dBm 251 mW / 251 mW 26 dBm / 22 dBm  ??/?? TODO

Max TX Power assumes used regulatory domain is Canada/USA/Haiti. Others may or may not allow higher TX powers (up to 30 dBm/1000 mW).

[edit] FAQ

See Firmware FAQ first before posting a question in the forums.

Q: After flashing DD-WRT, the LAN LEDs are now green for 10/100M and orange 1000M? (v1/v2 only)

A: This is an intentional change by the DD-WRT developers, Netgear had the colors backwards as gigabit is usually orange (check any other NIC!).


Q: I heard some WNDR3700 radios were dying shortly after flashing DD-WRT? Does the firmware damage routers?

A: No DD-WRT does not damage routers, there is also reports as said above, of WNDR3700's having weak wireless even when DD-WRT was never put on it. It is a faulty hardware issue.


Q: Is there going to be a special version of DD-WRT for this router?

A: No, there are no special versions anymore except for Buffalo routers.


Q: Is it possible to restore the factory or stock firmware that came with my router?

A: Yes. Refer to WNDR3700: Restore Factory Firmware in Five Easy Steps.

[edit] Useful Information

WNDR3700v2 broken reset button

[edit] Unbricking

See Reinstall the firmware on a router without the setup CD recovery tool