Linksys E3000

From DD-WRT Wiki

Revision as of 18:11, 24 January 2011 by Buddee (Talk | contribs)
Jump to: navigation, search


Hardware Specifications


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

You can use some of these figures to come up with what Tx power rating would be best for you. As factory lists it a max of 20dBm than 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

Internel PIFA antennas are rated at 3dBi

Flashing instructions for the E3000

  1. Disconnect all cables and wireless clients.
  2. Do a Hard reset or 30/30/30 on router.
  3. Connect 1 Lan cable to pc doing the flash.
  4. Log into Web Interface and flash the firmware 14929 E3000 Trailed Initial Flash Build
  5. Wait 5 minutes until WAN light turns on.
  6. Power cycle by unplugging E3000 for 30 secs.
  7. Plug E3000 back in and wait about 5 minutes until it finsihes booting.
  8. Do a 30/30/30 reset on router.
  9. Wait 3 minutes and log into web interface.
    • You may have to clear your browser cache before the web login will display.

Credits go out to mcannon-gso

As of July 2010 you can only use the trailed builds with the e3000 name in it for initial flashing and nothing else, using other bin's without the e3000 name in it for initial flashing may result in a bricked unit! After you have dd-wrt installed to your unit, you can then use the e2k-e3k.bin's for upgrading to newer builds.

DD-WRT E3000 Build information

Always use the E~ series builds for upgrading. Anything else will brick your unit

The latest builds for this unit can be currently found in the FTP. Support was added in 14826 and on.

Brainslayer added E3000 Support from 14929 and on and builds are to be found in the broadcom_K26 folder of his build branch.

Also it has been asked about the builds with e2k-e3k name in them, these builds are for if you already have those units flashed with 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.

Some useful tips

  • At step 5: "Wait 5 minutes until WAN light turns on". I waited for 5 minutes but the WAN light never turned on (I had no ethernet cable connected to the wan port). I didn't bother to wait for the WAN light to come up but I did wait the 5 minutes to continue with step 6 and further.
  • The steps above also apply for people running a converted E3000 with a stock linksys firmware. With these steps it is possible to flash your converted E3000 (running stock linksys firmware) with DD-WRT.
  • 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

Reverting back to stock firmware

It has been asked about how to revert back to stock firmware, why would you ever want to do that?!? You can always flash back to dd-wrt anyhow, to revert back to stock firmware simply 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.