Netgear WNDR3400

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-ONLY the version 1 model is supported. Version 2&3 are not supported as of yet.+[[Image:WNDR3400.png|right]]
-This router only uses k26 builds and ALL flashing must be with a build with k2.6 in the name.+= Important Notes =
-* Read the [http://www.dd-wrt.com/phpBB2/viewtopic.php?t=51486] peacock announcement at the start of the broadcom forum. Read it all. Carefully. +'''Only version 1 is supported.''' Versions 2 & 3 are not yet supported.
-Installation:+'''This router only uses K26 builds.''' Use builds with '''K2.6''' in the name.
-# There are two versions available. One is for [ftp://dd-wrt.com/others/eko/V24-K26/svn18946/dd-wrt.v24-18946_NEWD-2_K2.6_mini-WNDR3400.chk]Netgear branded routers and the other is for [ftp://dd-wrt.com/others/eko/V24-K26/svn18946/dd-wrt.v24-18946_NEWD-2_K2.6_mini-WNDR3400_CVNA.chk]Cablevision routers.+'''Read the [http://www.dd-wrt.com/phpBB2/viewtopic.php?t=51486 Peacock] announcement''' (at the top of the Broadcom Forum). ''Read it all. Carefully.''
-# Do a factory reset and upgrade to the firmware above, it will complain about downgrading but just hit allow.+
-# DONE!+
-# To gain functionality of the usb port, upgrade to the [ftp://dd-wrt.com/others/eko/V24-K26/svn18946/dd-wrt.v24-18946_NEWD-2_K2.6_big-nv64k.bin]big version after flashing the mini version above.+
-Uninstallation:+ 
-# Download official firmware [http://www.downloads.netgear.com/files/GDC/WNDR3400V1/WNDR3400%20Firmware%20Version%201.0.0.50.zip]+= Hardware Specs =
-# Factory Reset DD-WRT+ 
 +{| border="1" cellspacing="0"
 +! CPU
 +| Broadcom BCM4718A1
 +|-
 +! CPU Speed
 +| 480 MHz
 +|-
 +! Flash ROM
 +| 8 MB
 +|-
 +! RAM
 +| 64 MB
 +|-
 +! Radios
 +| 2.4 GHz and 5 GHz
 +|-
 +! WLAN Support
 +| a/b/g/n
 +|-
 +! WLAN Max Speed
 +| 300 mbps on 2.4Ghz and 300mbps on 5Ghz
 +|-
 +! Antenna Location
 +| Internal
 +|-
 +! Switch
 +| 4x 100 + 1 100 WAN
 +|-
 +! USB
 +| 1x USB 2.0
 +|}
 + 
 + 
 += DD-WRT Installation =
 + 
 +# There are two versions of this router with corresponding initial flash mini firmware. One is for [ftp://dd-wrt.com/others/eko/V24-K26/svn18946/dd-wrt.v24-18946_NEWD-2_K2.6_mini-WNDR3400.chk Netgear branded routers] and the other is for [ftp://dd-wrt.com/others/eko/V24-K26/svn18946/dd-wrt.v24-18946_NEWD-2_K2.6_mini-WNDR3400_CVNA.chk Cablevision routers].
 +# Do a factory reset (with the button on the back), and upgrade with the appropriate mini firmware above. If it complains about downgrading, just Allow.
 +# To gain functionality of the usb port, upgrade to the [ftp://dd-wrt.com/others/eko/V24-K26/svn18946/dd-wrt.v24-18946_NEWD-2_K2.6_big-nv64k.bin big version] or the [ftp://dd-wrt.com/others/eko/V24-K26/svn18946/dd-wrt.v24-18946_NEWD-2_K2.6_mega-nv64k.bin mega version] after flashing the mini version above.
 +# 30-30-30 reset router
 + 
 + 
 += Build Notes =
 + 
 +===[ftp://dd-wrt.com/others/eko/BrainSlayer-V24-preSP2/2012/06-08-12-r19342/broadcom_K26/ 19342]===
 + 
 +* This is a good build for this router.
 + 
 +===[ftp://dd-wrt.com/others/eko/BrainSlayer-V24-preSP2/2013/05-27-2013-r21676/broadcom_K26/ 21676]===
 + 
 +* '''Upgrading to 21676 Big will brick this router! Use [ftp://dd-wrt.com/others/eko/BrainSlayer-V24-preSP2/2013/05-27-2013-r21676/broadcom_K26/dd-wrt.v24-21676_NEWD-2_K2.6_mega-nv64k.bin 21676 Mega] instead.'''
 +* This is otherwise a very good build for this router.
 + 
 + 
 +=Unbricking=
 + 
 +Contrary to the advice in Peacock, this router can often be recovered by shorting pins as described [http://www.dd-wrt.com/phpBB2/viewtopic.php?t=153763 here] if you have managed to brick it:
 + 
 +* Timing of the pin shorting is tricky -- power on, wait for the lights to flash, then try shorting a few times until the power light starts flashing steadily.
 + 
 +* Then use tftp2 (with no password) to flash factory firmware.
 + 
 +* After the flash, ''wait for at least a minute until the router boots up and the power light becomes steady green'' before resetting the router.
 + 
 + 
 +=Revert to Factory Firmware=
 + 
 +# Download [http://www.downloads.netgear.com/files/GDC/WNDR3400V1/WNDR3400%20Firmware%20Version%201.0.0.50.zip official Netgear firmware]
 +# Factory Reset DD-WRT (with the button on the back)
# Enable telnet under services # Enable telnet under services
# Telnet to router (192.168.1.1) # Telnet to router (192.168.1.1)

Revision as of 20:11, 5 February 2014

Contents

Important Notes

Only version 1 is supported. Versions 2 & 3 are not yet supported.

This router only uses K26 builds. Use builds with K2.6 in the name.

Read the Peacock announcement (at the top of the Broadcom Forum). Read it all. Carefully.


Hardware Specs

CPU Broadcom BCM4718A1
CPU Speed 480 MHz
Flash ROM 8 MB
RAM 64 MB
Radios 2.4 GHz and 5 GHz
WLAN Support a/b/g/n
WLAN Max Speed 300 mbps on 2.4Ghz and 300mbps on 5Ghz
Antenna Location Internal
Switch 4x 100 + 1 100 WAN
USB 1x USB 2.0


DD-WRT Installation

  1. There are two versions of this router with corresponding initial flash mini firmware. One is for Netgear branded routers and the other is for Cablevision routers.
  2. Do a factory reset (with the button on the back), and upgrade with the appropriate mini firmware above. If it complains about downgrading, just Allow.
  3. To gain functionality of the usb port, upgrade to the big version or the mega version after flashing the mini version above.
  4. 30-30-30 reset router


Build Notes

19342

  • This is a good build for this router.

21676

  • Upgrading to 21676 Big will brick this router! Use 21676 Mega instead.
  • This is otherwise a very good build for this router.


Unbricking

Contrary to the advice in Peacock, this router can often be recovered by shorting pins as described here if you have managed to brick it:

  • Timing of the pin shorting is tricky -- power on, wait for the lights to flash, then try shorting a few times until the power light starts flashing steadily.
  • Then use tftp2 (with no password) to flash factory firmware.
  • After the flash, wait for at least a minute until the router boots up and the power light becomes steady green before resetting the router.


Revert to Factory Firmware

  1. Download official Netgear firmware
  2. Factory Reset DD-WRT (with the button on the back)
  3. Enable telnet under services
  4. Telnet to router (192.168.1.1)
  5. Issue the command "mtd erase linux" & wait ~3 mins
  6. tftp the official firmware to the router
    • tftp for windows [1] enter router ip, leave password blank, select official firmware file
  7. 30-30-30 reset router