Netgear WNR3500L

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[edit] CAUTION:

This wiki is NOT for the WNR3500Lv2 (install guide here) which is a NAND flash device.
The WNR3500Lv1 is only properly recognized using a K26 build (in the broadcom_K26/ directory).
NOTE: builds must be smaller than ~7.3 MB(7,654,604.8 Bytes or 7,475.2 KB) , or you will brick your device.
NOTE: larger images have been successfully flashed, but always exercise caution!
See K3X Builds for more information.

[edit] REQUIRED Reading

Read the Firmware FAQ and Peacock Announcement

[edit] Which Firmware?

The WNR3500Lv1 traditionally only supports the "NEWD-2_K2.6" firmware, but K3X has been reported to work.
For build information and much more, see Where do I download firmware?.
Compare the features of different build versions Version Features.
NOTE: This router has 8MB flash, but due to Netgear's partitioning, available space is reportedly ~7.3MB (7,654,605 B or 7,475 KB.
CAUTION: Do not try larger builds, as this will overwrite required partitions.
NOTE: The largest build reported to successfully flash is 47033 K3x (7667712 Bytes = 7.3125MB).

[edit] Installation of DD-WRT from Netgear Firmware


  • The WNR3500L requires K2.6 builds of DD-WRT (Update: see "K3X builds")
  • First download a trailed build .chk to flash to the router from Netgear factory firmware.
  • Once running DD-WRT, the .bin builds can be used
  • Research the forum for "New Build" and router model threads before selecting a build.
  • dd-wrt.v24-21061_NEWD-2_K2.6_mini-WNR3500L.chk has been reported to work for initial flash


  • Set a static IP (e.g., subnet, gateway on the PC for flashing.
  • Connect the PC to the router's LAN port (recommended to unplug everything else)
  • Perform a hard reset on the router.
  • Go to
  • Cancel the router's automatic firmware update checking, then click on "Router Upgrade" in the left menu.
  • Upload the special .chk firmware file.
  • Wait 5 minutes after the router says it is done
  • Perform another reset, and clear the web browser cache between updates.
  • Repeat steps 4-7 with the .bin firmware file.
  • Login and start tweaking

[edit] K3X builds

There are some K3X builds that have been reported to work on the WNR3500L:

NOTE: If you attempt this, only flash when already running DD-WRT (there is no trailed build in K3X prior to 43055)
NOTE: The router name doesn't recognize the v1, but reports "Router Model: Linksys WRT54G/GL/GS"

[edit] LAN Ports not Working

Use the VLAN config in the GUI.

[edit] Reverting back to factory firmware

For now this is a WIP, but in the interim, you can simply follow this guide to revert back:
How to revert back to factory firmware

[edit] Debricking

An article on de-bricking your WNR3500L with a USB-TTL cable

[edit] Mods

Exchange embedded wireless antennas for external antennas on Netgear WNR3500L