Asus RT-N13U B1 - DD-wrt thread


Hell Yeah[Born Critic]
Just checked that B1 now has dd-wrt support time to get rid of filthy Asus Software

Router Database |

Source - Asus RT-N13U - DD-WRT Wiki

So its finally here –

Most of the contents have been taken from DD-WRT Wiki and added/modified some info to improve the information flow.

Guide to Install DD-WRT on Asus RT-N13U

Reasons why you should opt for DD-WRT over shitty Asus Firmware

  • Almost all Linux Kernel Fixes done in dd-wrt.

  • Allows freedom to go about install any apps which linux supports(Most probably all of them)

  • Very good for people who intend to use in cybercafes as it allows tighter control and improved security and proper logging of events

  • DD-WRT is far superior compared to other open Firmware like Tomato and Open WRT and DD-WRT community is best in the recent times.

  • Install Transmission to get all download on your USB without keeping the PC turned on[Yes it supports full resume downloads never break now]

You should not do this if you dont understand much of it.[SERIOUSLY]

Flashing Process

First and foremost you must take care that you have Asus Original Firmware with you just in case anything goes wrong while flashing[Dont hold me responsible]

  • Download latest DD-WRT Firmware Image[This is the custom firmware]

    Browse to firmware repository and select/open most current directory, Ex. 12-24-10-r15962/

    Open 'Asus-RTN13U' directory and download 'asus-to-ddwrt.trx'[Choose the router model appropriately if its B1 then select from 'Asus-RTN13UB1' ]

    Recommended is to get 16804.
  • Download latest version of the Asus Utility[This is just in case of rolling back]

    Browse to ASUSTeK Computer Inc. -Support- Drivers and Download

    In the three dropdown menus, select 'Wireless', 'AP/Router', 'RT-N13U', and click 'Search'

    Select OS in popup menu

    Click '+' next to 'Utilities' and skip down to your version (Also see next step, download firmware.)

    Within that zip file, navigate to the UT4063/Utility folder and run 'setup' to install.

    Be sure there is access to the Firmware Restoration utility
  • Download safety copy of Asus firmware

    Do same as previous step, except click '+' next to 'Firmware' and download latest version of your model

    Note that this file should not be needed; use only to restore Asus FW to router if later desired.
  • Last few checks

    If not already directly wired, connect Ethernet cable from one of the router's LAN ports to client PC.

    Be sure router's other three LAN ports and WAN port are open (nothing connected)[Very Very Important]

    On PC, disable all other network adapters: wireless, modem, etc.[Another very important step ignoring it might brick the router]

    On PC, disable any firewall (Ex. Windows Firewall)

    Optional: Set PC to use a static IP, Ex., netmask, gateway[I recommend this to be done]

    If possible, use uninterruptable power supply (UPS) for both PC and router. A power failure while flashing, though not likely, will probably brick the router.

    Note: Early on, some had problems using Firefox. Consider using Internet Explorer or Chrome.

Flash to DD-WRT

  • Place router in Recovery mode

    Disconnect power adapter plug from the RT-N13U

    Push and hold the Restore button located on bottom panel[use a pen point to press the button properly]. While continuing to hold down the Restore button, plug the power adapter back into router.

    After five seconds, LED on front panel starts to blink, release the button.
  • Upload firmware image

    On PC, open Asus' Firmware Restoration utility (installed earlier)

    In Firmware Restoration window, click 'Browse' and select the DD-WRT image file, asus-to-ddwrt.trx (downloaded earlier)

    Click 'Upload' to begin flash process that can take up to four minutes. Brick warning: Do not interrupt!

    When message that router is rebooting appears, close Firmware Restoration utility.
  • Reboot, launch DD-WRT web interface, and cleanup

    After a minute or two, disconnect power adapter plug from the RT-N13U

    Wait at least ten seconds, then reconnect to power

    If optional step of setting static IP was followed earlier, can reset to automatic

    Browse to should bring up the DD-WRT web interface; set name/password for first access

    Configure router as desired. Default connection is DHCP; for DSL check DSL with DD-WRT.

    When satisfied that factory firmware will not be used again, uninstall Asus Utility from PC and delete Asus files.[I wont recommend removing this]

Configure USB

Once this is done CFW [DD-WRT] is installed on your router now you need to get other utilities installed.

Firstly need to configure a USB where we would be installing the apps

The software we will install needs to be saved on the usb disk and, while we could actually save it on the same partition we will use for the data, it is highly discouraged.

DD-WRT support Ext2, Ext3,FAT32,FAT,NTFS but i have gone with EXT3 since its gives best performance NTFS seriously hampers down the downloads if you do it via Transmission if you are not using router for downloads you can use NTFS as well

For this we will create 2 different partition Ii have Ext3 – 512MB [Acting like a C:] and a 12GB Ext3 partition acting as D: to store the data.

How to create partition on USB – Get Gparted from here GParted -- Download

There are also tools like Easeus Partition manager and Minti Tool Partion Manager

Burn it as iso and boot pc from CD

Follow the steps shown in the pics to see the procedure

Make sure you select proper drive and NOT Accidentaly your hard drive








Above steps are shown for Ext3 and NTFS but you can always create 2 different EXT3 Partition.

Once done re-start pc by clicking Exit option.

Partition 1 – Mounted on /opt – From 512Mb to 2Gb (I normally use 1Gb) – Formatted with EXT3

Partition 2 – Mounted on /mnt – All the remaining space – Formatted with EXT3

  • Just paste the following into the text box in Administration -> Commands and click Save Startup

    [NOTE: configuration of filesystem support and partitions can be easy set at first line, NTFS needs aditional driver, that can be installed after you pass Optware guide by ipkg install ntfs-3g]

Read comments beside the line to understand what it does

mkdir /tmp/etc/config #Create a dir /tmp/etc/config
echo "wget -P /tmp/root" >> /tmp/etc/config/fs.wanup #Get the tar file which has fs drivers and store in /tmp/root
echo "tar -xvzf /tmp/root/fs.gz -C /tmp/root" >> /tmp/etc/config/fs.wanup #Build a shell script by appending to output using >> , command to extract the tar file.
echo "sh /tmp/root/ext3" >> /tmp/etc/config/fs.wanup #Add ext3 to run it
echo "mount -o rw -t ext3 /dev/discs/disc0/part1 /opt" >> /tmp/etc/config/fs.wanup #Add mount to 1st partition
echo "mount -o rw -t ext3 /dev/discs/disc0/part2 /mnt" >> /tmp/etc/config/fs.wanup #Add mount to 2nd partition
echo "rm /tmp/root/*.ko /tmp/root/fs.gz /tmp/root/ext3" >> /tmp/etc/config/fs.wanup #Clean up the traces
chmod +x /tmp/etc/config/fs.wanup # Provide Exec permissions and run the above commands
echo "nobody:*:65000:65000:nobody:/mnt:/bin/false" >> /etc/passwd # Add nobody for samba share
sleep 60 # Wait for 1 minute

echo 1 > /sys/class/scsi_disk/0:0:0:0/allow_restart # To avoid HDD spindown

wget [URL][/URL] -O /mnt/data/torrents/.config/transmission-daemon/settings.json # Get the settings.json from internet just in case local file gets corrupted can you remove this if u dont want

/opt/bin/transmission-daemon -g /mnt/data/torrents/.config/transmission-daemon #Start Transmission - Can remove this if you keep S99trans file keep either of them.

  • Enable the following under Services -> USB
  • Core USB Support
  • USB 2.0 Support
  • USB Storage Support
  • Automatic Drive Mount

  • Reboot router with an ext3 formatted USB drive plugged in

If the drive was successfully mounted (which may take some time), try another filesystems by editing 1st line of script.

[NOTE: check mounts thru putty by df -h because in dd-wrt gui is is shown only after repluging drive]

You might see something like this.


If you dont see /opt as mounted default go to Services->USB and change the mount to /opt Save and Apply Settings and then re-boot the router again Admin->Management go bottom Re-boot router

Installing Optware

Now we will be installing Optware which helps installing every other apps.

Before that get Putty

Telnet to with root username and password which you had set and run mount command to see whether the drives have mounted correctly or not your drives have to be mounted correctlty to get move ahead

root@DD-WRT:/tmp# mount

rootfs on / type rootfs (rw)

/dev/root on / type squashfs (ro)

none on /dev type devfs (rw)

proc on /proc type proc (rw)

sysfs on /sys type sysfs (rw)

ramfs on /tmp type ramfs (rw)

devpts on /dev/pts type devpts (rw)

devpts on /proc/bus/usb type usbfs (rw)

/dev/discs/disc0/part1 on /opt type ext3 (rw,noatime,nodiratime,data=ordered)

/dev/discs/disc0/part2 on /mnt type ext3 (rw,noatime,nodiratime,data=ordered)



Host Name:

Connection type: Telnet

Installing Optware (only to an ext3 partition; /opt MUST be empty)

wget [URL][/URL] -O - | tr -d '\r' > /tmp/

sh /tmp/; ipkg update; ipkg upgrade

wget [URL][/URL] -P /opt/bin; chmod +x /opt/bin/sort

[NOTE: gateway is hard set to, if u have problem with this replace in by vi or sed]

Now you can install another Optware packabe from Tutorials - DD-WRT Wiki or if u like:

Recommend change to ipkg to track the download status while install pkg unhash the verbose-wget line

root@DD-WRT:/opt/etc# more ipkg.conf

#Uncomment the following line for native packages feed (if any)

#src/gz native [URL][/URL]

src/gz optware [URL][/URL]

dest /opt/ /

option verbose-wget               ##################This line will have a # prefix to it , remove it

Install xinetd, vsftpd, samba, webserver, pxe boot server, wget, nano, htop, dlq rapget

[I havent installed nano since i dont needed it vi does the job for me ;-) and dont install samba 3.5 samba 2 provide best transfer speeds]

ipkg install xinetd htop nano samba2 vsftpd tftp-hpa wget; killall xinetd smbd nmbd

rm /opt/etc/samba/smb.conf /opt/etc/vsftpd.conf /opt/etc/init.d/S80samba  /opt/etc/xinetd.d/tftp

wget [URL][/URL] -P /opt; tar -xvzf /opt/opt.gz -C /opt

sh /opt/etc/init.d/S10httpd; sh /opt/etc/init.d/S10xinetd; rm /opt/opt.gz

  • Well done, RT-N13u is ready for basic usage, u can acces by

samba: \\

rem to add as hardrive in W7/XP run in command line

net use a: \\\www

net use b: \\\dlq



  • Open to the world (paste to Administrations -> Commands and Save Firewall)

    iptables -t nat -I PREROUTING -p tcp -d $(nvram get wan_ipaddr) --dport 80 -j DNAT --to
    iptables -t nat -I PREROUTING -p tcp -d $(nvram get wan_ipaddr) --dport 22 -j DNAT --to
    iptables -t nat -I PREROUTING -p tcp -d $(nvram get wan_ipaddr) --dport 21 -j DNAT --to
    iptables -I INPUT -p tcp -d --dport 8080 -j logaccept
    iptables -I INPUT -p tcp -d --dport 22 -j logaccept
    iptables -I INPUT -p tcp -d --dport 21 -j logaccept

    Now the reason why i bought this router

    Installing a Transmission-daemon

    Make the following folders

    cd /mnt
    mkdir -p /mnt/data/torrents              # -p to make both directories at the same time

    The plan is to have everything torrent go to the folder /mnt/data/torrents.So torrent data would be under Partition 2

    Installing Transmission

    /opt/bin/ipkg-opt -verbose_wget install transmission

    Started and stopped Transmission to get the basic work folders

    /opt/bin/transmission-daemon -g /mnt/data/torrents/.config/transmission-daemon
    killall transmission-daemon

    With the command above you get the basic folder structure of:

    /mnt/data/torrents/.config/transmission-daemon/settings.json  #file
    /mnt/data/torrents/.config/transmission-daemon/stats.json       #file

    Edit settings.json to contain the following

    vi /mnt/data/torrents/.config/transmission-daemon/settings.json
         "blocklist-enabled": 1,
         "download-dir": "/mnt/data/torrents",
         "download-limit": 100,
         "download-limit-enabled": 1,
         "dht-enabled": false,
         "encryption": 2,
         "lpd-enabled": false,
         "max-peers-global": 35,
         "peer-port": 25000,
         "pex-enabled": 1,
         "port-forwarding-enabled": 1,
         "rpc-authentication-required": 0,
         "rpc-password": "",
         "rpc-port": 9091,
         "rpc-username": "",
         "rpc-whitelist": "192.168.1.*",
         "umask": 0,
         "upload-limit": 200,
         "upload-limit-enabled": 1,
         "utp-enabled": true

    The file settings.json can also be downloaded from here (the wget command is one line):

    wget [URL][/URL] -O /mnt/data/torrents/.config/transmission-daemon/settings.json

    Open the port

    /usr/sbin/iptables -I INPUT 1 -p tcp --dport 25000 -j logaccept

    Run again

    /opt/bin/transmission-daemon -g /mnt/data/torrents/.config/transmission-daemon

    Accessing Transmission web interface

    Now you get web access to the Transmission page by going to That is, if your routers IP is

    How to get transmission to download torrent files?

    - In a web browser go to your favourite torrent site/tracker and download a "<myfile>.torrent" file

    - In a web browser go to to enter the Transmission web page.

    - click "open"

    - click the text field (or "select" button)

    - point out the "<myfile>.torrent"

    - click "upload"

    and the torrent'ed file should start downloading shortly.

    The downloaded file will turn up in the /mnt/data/torrents folder.

    The full space of the file will be reserved from the start, so in a FTP, WinSCP or Explorer via Samba it may seem like the file is all there immediately, but it is not! It is fully downloaded when the line turns green in the Transmission web interface at

    You can see details about any of the torrent files by clicking the Inspector button on the right in the Transmission web interface.

    I personally prefer Transmission Remote GUI, nice uTorrent kind of interface just enter IP as and port as 9091[Or whatever you have confired]

    Wanna Share the Data of the Mounted Drive via Wi-Fi run the below command

    ln -s /mnt/data /opt/share/www/data

    Change the smb.conf file to /mnt/data

    Or just simply change the samba file.

    root@DD-WRT:/opt/etc/samba# vi smb.conf
      server string = dd-wrt
      workgroup = dd-wrt
      netbios name = dd-wrt
      interfaces =
      security = share
      encrypt passwords = yes
      smb passwd file = /opt/etc/samba/smbpasswd
      null passwords = Yes
      client code page = 850
      character set = ISO8859-1
      socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
      log file = /opt/var/samba/log.*
      max log size = 100
      load printers = No
      dns proxy = No
      hosts allow = 192.168.  127.
      remote announce =
      [B]path = /mnt/data[/B] #######This is where you change
      read only = no
      guest ok = yes
      path = /opt/share/dlq
      read only = no
      guest ok = yes

    Having problems mounting the drive

    Read the guide again , you have definitely missed something, most people do the incorrect partitioning causing all the trouble and do not add the startup script.

    If still not provide the output of following commands in the thread

    cd /dev/discs/disc0;ls -lrt

    To recognize ext3 partition in Windows get Ext2FSD install and run the service then you can read write on Ext3 partition too on windows.

    Ext2Fsd Project

    Hard disk spin down issue fix [recommended for Portable HDD]

    echo 1 > /sys/class/scsi_disk/0:0:0:0/allow_restart

    USB Getting unmounted / readonly with below error in dmesg

    <3>scsi 0:0:0:0: rejecting I/O to dead device

    Run this

    echo 128 > /sys/block/sda/device/max_sectors

    Add this to your startup

    How many torrents can it handle ?


    If you cant get the drive mounted make sure you had the startup script set up correctly and partitions are created in correct order and if you are on ADSL make sure the modem is connected to internet.

    Reverting to Asus Firmware

    First: download the right firmware from the ASUS website ([URL][/URL])
    Second: Setup your computer as you did to flash to DD-WRT (static IP address, disable other networking adapters, and use a wired LAN connection, disable your firewall).
    Third: Install and open the Asus Firmware Restoration utility in windows. Once this is all ready to go, unplug the router. Wait a few seconds, then hold the restore button on the underside of the router. While holding the restore button plug the router back in and keep holding the button until the power light flashes slowly. It will then be in recovery mode waiting for the utility to upload the firmware.
    Fourth: With the router in recovery mode, select the downloaded firmware with the Firmware Restoration utility. Then click the button to start the upload. The utility will guide you from there.
    Once done Reset all of the settings to default and started from scratch.

    P.S - I have sold my device so i wont able to help much as if now


^^I saw your posts over at dd-wrt forums! Will give this a shot soon. Hopefully I will find some time to actually understand the feature-set that dd-wrt would bring in!



Thanks a lot bro for that special PM.

uh, was thinking of selling this off becoz of dumb download master software.

Total n00b on DDWRT, Could you please tell how to install, What extra do we get with it ? Will torrents work ?

Please PM URL if you have posted whole method somewhere else.


There was reports of successful installation of transmission and downloads to usb drive. Now waiting to move from WL-520GU to the N13U after you guys get it working..



Yes, You can download firmware from Asus site, Or PM me I can upload for you.

Can try with 4GB / 8GB USB drive, Can anyone confirm reports of successful installation & working of transmission ?

Seems firmware is still in beta, Will it work ?


Hell Yeah[Born Critic]
Nope its not buggy still i need to get FAT32 and NTFS will take some time since i need to get time out of my office work, see transmission working ;-)


--- Updated Post - Automerged ---

**** Default Transmission Installed Transmission Remote GUI exact replica of utorrent gives all the options which utorrent enjoying now


Hell Yeah[Born Critic]
Yep , NTFS support coming today ....

BTW - It supports full resume and selection of files from torrent files.



What happens when net disconnects / power goes off for sometime & comes back. Will torrents on this transmission will start automatically or needs to restart them manually.

Would you be kind enough to post full method of doing DD WRT on N13 B1 just to download torrents using external USB Thumb drive (4 GB FAT32).


Hell Yeah[Born Critic]
When power comes it resumes it never fails :D And why FAT32 when you have the power of NTFS :clap:

Wait for tomorrow I'll try post everything if i can get the time from my daily routine (I'm bad at documentation)

--- Updated Post - Automerged ---

Time for show off see the single 6Gb file getting downloaded


And now see NTFS mounted




Oh Man, 220 Kb, more then enough speed :)... No more selling of B1.

its ok if you don't write huge documentation. Just post screenshot.. or steps one by one. Will manage somehow.

Really waiting to try this & make my B1 as 24*7 download hub.