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Rosewill RNX-N300RT

This is a rebranded TP-LINK TL-WR841ND v7.? but the Rosewill web interface firmware updater will only accept firmware with Rosewill vendor bytes (in the file header). OpenWRT currently does not have those bytes. DD-WRT has everything we need, so we use it to bootstrap.

Install OpenWrt 12.09 on a Rosewill RNX-N300RT

  • Tested with a Rosewill RNX-N300RT v1 hardware wireless router, purchased Dec. 2013
  • Tested with DD-WRT v24 PreSP2 build 21061
  • Tested with OpenWrt 12.09 final

Temporary flashes to DD-WRT and TP-LINK firmware are needed to get OpenWrt on this device.

Step 1

Use the Rosewill web admin interface to flash to DD-WRT using the DD-WRT Rosewill RNX-N300RT firmware.

  • Download factory-to-ddwrt.bin from (just go to this link and the file will sent to the browser as a download) – the DD-WRT firmware image has the Rosewill RNX-N300RT vendor bytes which the OpenWRT firmware currently lacks.
  • Log into the Rosewill web admin interface at, user admin, password admin
  • Go to System Tools > Firmware Upgrade, browse to select factory-to-ddwrt.bin and click Upgrade > OK
  • Wait for the firmware to be uploaded and the router to reboot. The browser should automatically connect again to the router at
  • When the DD-WRT initial web login screen at about changing the default password appears, enter required information
    • Username: admin
    • Password: admin
  • Continue to step 2

Step 2

Use the DD-WRT web admin interface to flash to stock TP-LINK TL-WR841N/ND v7 firmware.

  • Download TP-LINK TL-WR841ND v7 stock firmware by downloading the file wr841nv7_webrevert.rar from the DD-WRT forum post at You must have a forum account and be logged in to see it.
  • Be sure that you unrar the file to get the file wr841nv7_webrevert.bin
  • In the DD-WRT web admin interface, go to Administration > Firmware Upgrade
    • Firmware Upgrade
      • After flashing, reset to: choose Reset to Default settings
      • Please select a file to upgrade: click "Browse…" and select the extracted wr841nv7_webrevert.bin file from the .rar download archive
      • Click "Upgrade" and wait for the firmware update to complete
  • Wait for the firmware to be uploaded and the router to reboot. When DD-WRT reports the firmware flash is complete, reconnect the browser to
  • When the TP-LINK initial web login screen appears, log in as:
    • Username: admin
    • Password: admin
  • Continue to step 3

Step 3

Use the TP-LINK web admin interface to flash to OpenWRT version 12.09 or later.

Failsafe mode for Rosewill RNX-N300RT

Boot in failsafe mode

  • Unplug the router's power cord
  • Connect any router LAN port directly to your PC
  • Configure your PC with a static IP address:
  • Plug the power on to the router
  • Wait until the "SYS" LED starts flashing repeatedly
  • Press the "WPS/Reset" button (on the front of the router) once – the "SYS" LED will now start flashing at a faster rate
  • The router is now in failsafe mode and can be reached by telnet at with no username or password required
toh/rosewill/rnx-n300rt.txt · Last modified: 2013/12/07 19:41 (external edit)