Linksys E3000

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[edit] Hardware Specifications

Characteristic Value
CPU Broadcom BCM4718
CPU Speed 480 MHz
Flash ROM 8 MB
Radios 2.4 GHz, 5 GHz
WLAN Support a/b/g/n
WLAN Max Speed 300 Mbps
Antenna Location Internal
Switch 4x GigE + 1 WAN
USB 1x USB 2.0

[edit] Output Power

You can use these figures to come up with what Tx power would be best for you. As factory lists it at a max of 20dBm, then a setting of 100mW could be used as 20dBm = 100mW, 17dBm = 50mW, and so on.

2.4GHz output power per TX chain

802.11b: Max. 20.5dBm @ All rates
802.11g: Max. 20.5dBm @ Low rates
Max. 19.5dBm @ High rates
Wireless-N 20MHz: Max. 20.5dBm @ Low rates
Max. 18.5dBm @ High rates
Wireless-N 40MHz: Max. 17.0dBm @ All rates

5GHz output power per TX chain

UNII-1 (5150-5250GHz)
802.11a: Max. 14.0dBm @ All rates
Wireless-N 20MHz: Max. 11.5dBm @ All rates
Wireless-N 40MHz: Max. 12.0dBm @ All rates
UNII-3 (5725-5850GHz)
802.11a: Max. 17.5dBm @ High rates
802.11a: Max. 20.0dBm @ Low rates
Wireless-N 20MHz: Max. 17.5dBm @ High rates
Wireless-N 20MHz: Max. 20.0dBm @ Low rates
Wireless-N 40MHz: Max. 17.5dBm @ High rates
Wireless-N 40MHz: Max. 21.0dBm @ Low rates

Internal PIFA antennas are rated at 3dBi

[edit] Initial Flash

Also reference this post regarding the newer nv60k.bin for Linksys E-series. Be aware that some E-series use nv60k, and others use nv64k.

  • This guide also applies to units converted to an E3000, running Linksys firmware.
  1. Read all required reading sections of the Peacock announcement:
  2. Disconnect all cables and wireless clients.
  3. As a precaution, USB disks should be removed before flashing.
  4. Do a Hard reset or 30/30/30 on router.
  5. Connect 1 Lan cable to pc doing the flash.
  6. Log into Web Interface and flash the firmware E3000 Initial Flash Trailed Build
  7. Wait AT LEAST 5 minutes until WLAN (Wireless LAN, not WAN) light turns on.
  8. Power cycle by unplugging E3000 for 30 secs.
  9. Plug E3000 back in and wait about 5 minutes until it finishes booting.
  10. Do a 30/30/30 reset on router.
  11. Wait 3 minutes and log into web interface.
    • Clear your browser cache if the web login does not display.

[edit] Upgrade in DD-WRT

AFTER FLASHING THE TRAILED BUILD, only use the following builds OR YOU WILL BRICK THE e3000:

  • For builds before svn16773, ONLY USE e2k-e3k.bin builds
  • For builds since svn16773, ONLY USE an E3000.bin trailed build
  • If running an E3000.bin build since svn16772, you can upgrade using E3000 (trailed) or nv60k builds
  1. To flash an nv60k build (that replaces e2k-e3k), you must flash a trailed E3000 build from svn16773 or later before nv60k. Do not flash directly from e2k-e3k to nv60k!
    • To flash another e2k-e3k build such as 15692 (must have e2k-e3k in the file name), follow these steps.
  2. Download the desired e2k-e3k or e3000.bin trailed build
  3. Hard reset the router, then login to the router at
  4. Go to the Admin->Firmware Upgrade page and flash the downloaded file.
  5. Wait AT LEAST 5 minutes until the WLAN light turn on, then unplug power on router and wait 30 seconds.
  6. Power up and wait 5 minutes, then hard reset again
  7. Wait until it finishes booting, log into web interface, set user/password, and set up DD-WRT
    • Clear your browser cache if the web login does not display.

[edit] e2k-e3k and nv60k

Any build past 16773 requires a different build, rather than e2k-e3k, for subsequent flashing. In order to use one of these experimental builds, you must ALREADY HAVE dd-wrt installed on your router using the instructions above, following the steps in the Peacock announcement note 1.

The first Eko -nv60k build is 16773; the first official BrainSlayer -nv60k build is 16785. If you have a pre-16773 build on the router then you can load either of BrainSlayers 16785 or 16994 builds with file name ending in e2k-e3k, flashing any those files will be the step stone bringing you over to -nv60k type builds.

16995 is the last dd-wrt build with upgrade files of e2k-e3k type, all upgrading thereafter is done with -nv60k type files.

[edit] Kong Build

Kong 22000++ is a stable, reliable, recommended large build for the E3000 without the Heartbleed vulnerability. You can (only) upgrade to Kong from DD-WRT. (There are no trialed Kong builds.) Two versions are available:

  • DLNA (recommended for home users)
  • VPN (recommended for office users)

(Easiest way to rip minidlna is flash the DLNA build then

cp /usr/sbin/minidlna /tmp/minidlna.conf /mnt

and then flash the VPN build.)

[edit] K3.x upgrade

To install K3.x the first time, follow these steps using these EXACT builds, otherwise it will soft brick the E3000.

  1. Start with a hard reset, then load from the GUI (Admin->Firmware Upgrade):
  2. K2.6_21676_mini_e3000, wait 5 minutes, hard reset, then load from the GUI:
  3. K2.6_21676_mega_nv60K, wait 5 minutes, hard reset, then load from the GUI:
  4. K3.x_21676_mega_nv60K, wait 5 minutes, hard reset
  5. Now any newer K3.x_mega build can be flashed from the GUI (use the trailed build for recent builds)

Reference: redhawk post

[edit] Build Information

Brainslayer added E3000 support starting from 14929 kernel 2.6 (in the broadcom_K26 folder).

Also it has been asked about the builds with e2k-e3k name in them, these builds when already running dd-wrt, you can simply use one of those builds to upgrade, but the initial flash should always be done with the trailed build (build with the unit only name in it) linked above.

[edit] Useful Tips

  • Cooling can be very important for E-series routers, due to the lack of airflow. It can affect performance and wireless stability. An easy mod to improve airflow under the unit is in this post by buddee.
  • If you experience disconnects from the Internet/Network with this router feel free to try the following settings:
Wireless > Channel > Ch 161 (5GhZ)
Wireless > Channel > Ch 9     (2.4GhZ)
Wireless > Security > WPA2 Personal - AES
Wireless > Advanced Wireless Settings > Beacon Interval: 75
Wireless > Advanced Wireless Settings > Fragmentation Threshold: 2306
Wireless > Advanced Wireless Settings > RTS Threshold: 2307
Security > Firewall > Block Anonymous WAN Access <--- Uncheck

[edit] Wireless-N Configuration

From the Wireless-N_Configuration wiki: AES security is required for 802.11n, as TKIP will force 802.11g. AES+TKIP is also allowed, but only WPA2+AES is recommended.

[edit] Printing

Printer Sharing gives a general description how to configure the router to connect a printer on the USB port. However it describes too much and things that are not needed or even not working for the E3000 router. Following procedure works with firmware DD-WRT v24-sp2 (12/24/10) mega, the latest version at the moment of writing.

So here a more specific description how to enable printing.

On the web interface of the router (

  • Enable "Core USB Support", "USB 1.1 Support (UHCI)", "USB 1.1 Support (OHCI)", "USB 2.0 Support", "USB Printer Support" on the Services tab (all items under "USB Support" except for "USB Storage Support"). Note that the router did not recognize my printer if I left the USB 1.1 drivers unselected. This even though the printer supports USB 2.0.
  • It is *not* necesary to enable JFFS2 support via Administration, Management
  • Check that Secure Shell is enabled via Services, Service. SSHd and Password Login must be enabled
  • Connect your printer to the router
  • Reboot the router via Administration, Reboot Router

Via an ssh client (for example putty under Windows) connect via SSH on port 22 to the router:

  • login as: root
  • password: <your password that you use to login to the web interface>
  • check if your printer was recognized:
 root@my-ddwrt-router:~# dmesg | grep usb
 usbcore: registered new interface driver usbfs
 usbcore: registered new interface driver hub
 usbcore: registered new device driver usb
 usb usb1: configuration #1 chosen from 1 choice
 usb usb2: configuration #1 chosen from 1 choice
 usb 2-1: new full speed USB device using ohci_hcd and address 2
 usb 2-1: configuration #1 chosen from 1 choice
 usblp0: USB Bidirectional printer dev 2 if 0 alt 1 proto 2 vid 0x047E pid 0x1001
 usbcore: registered new interface driver usblp

This indicates that a printer is detected on the USB port

  • Now enter
 root@my-ddwrt-router:~# netstat -an
 Active Internet connections (servers and established)
 Proto Recv-Q Send-Q Local Address           Foreign Address         State
 tcp        0      0  *               LISTEN
 tcp        0      0    *               LISTEN
 tcp        0      0    *               LISTEN
 tcp        0      0    *               LISTEN
 tcp        0    268     ESTABLISHED
 tcp        0      0     TIME_WAIT
 tcp        0      0     TIME_WAIT
 tcp        0      0     TIME_WAIT
 tcp        0      0     TIME_WAIT
 tcp        0      0     TIME_WAIT
 tcp        0      0     TIME_WAIT
 tcp        0      0     TIME_WAIT
 tcp        0      0     TIME_WAIT
 tcp        0      0     TIME_WAIT
 tcp        0      0     TIME_WAIT
 udp       0      0*
 udp       0      0    *
 udp       0      0    *
 raw       0      0   *               255
 Active UNIX domain sockets (servers and established)
 Proto RefCnt Flags       Type       State         I-Node Path
 unix  3      [ ]         STREAM     CONNECTED       1178
 unix  3      [ ]         STREAM     CONNECTED       1177
 unix  2      [ ]         DGRAM                      1161

We are especially interested in the line

 tcp        0      0  *               LISTEN

It is saying that a service via tcp is listening on port 9100

  • And at last enter
 root@my-ddwrt-router:~# ps | grep p9100d
 927 root      1108 S    p9100d -f /dev/lp0 0 -t 5

This also indicates that a process p9100d is running looking at port /dev/lp0 which is a printer port

  • You don't have to install anything via ipkg or any other script. Everything is installed by default. So if you don't have the expertise to ssh to your router, don't despair, it is only to make sure that your router recognises your printer on the USB port.

To install the printer under Windows, use the following procedure:

Windows 7

  • Open Control Panel, Devices and Printers
  • Choose Add a printer
  • Add a local printer
  • Create a new port
  • Type of port: Standard TCP/IP Port
  • Hostname or IP address:
  • Make sure that the checkbox to query the printer and select a driver is not checked
  • Wait until the detection is done. It will say that the device is not found. Don't despair
  • Choose Custom and then click Settings
  • Make sure that Protocol Raw is selected and Port 9100 is entered. That will be proposed.
  • Leave all other settings also as they were and press OK
  • Click Next.
  • Choose the printer driver for your printer.
  • Click Next
  • Give your printer a name
  • You don't have to share the printer
  • Next
  • You can set it as default printer
  • Finish


Don't forget that your routers default address is and its port is 9100

[edit] Reverting back to stock firmware

To revert back to stock firmware download the latest E3000 firmware from linksys site, reset you router to defaults from within dd-wrt's webgui, wait, then login and select the stock firmware file and flash, make sure to select "reset to defaults" on the drop down menu when flashing. See For older versions see