Linksys E3000
From DD-WRT Wiki
Contents |
Hardware Specifications
CPU | Broadcom BCM4718 |
---|---|
CPU Speed | 480 MHz |
Flash ROM | 8 MB |
RAM | 64 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
- Disconnect all cables and wireless clients.
- Do a Hard reset or 30/30/30 on router.
- Connect 1 Lan cable to pc doing the flash.
- Log into Web Interface and flash the firmware 14929 E3000 Trailed Initial Flash Build
- Wait 5 minutes until WAN light turns on.
- Power cycle by unplugging E3000 for 30 secs.
- Plug E3000 back in and wait about 5 minutes until it finsihes booting.
- Do a 30/30/30 reset on router.
- 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.
ftp://ftp.dd-wrt.com/others/eko/V24-K26/
Brainslayer added E3000 Support from 14929 and on and builds are to be found in the broadcom_K26 folder of his build branch.
ftp://ftp.dd-wrt.com/others/eko/BrainSlayer-V24-preSP2/
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
- I have noticed with these style of linksys units, cooling can be very important to its performance, thus I have done a nice easy mod that will allow air flow for under the unit. Check this post for details. http://www.dd-wrt.com/phpBB2/viewtopic.php?p=475684&highlight=#475684 -buddee
- 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.