Linksys E4200
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| Radio wl0 is Broadcom 4718 (SoC) | Radio wl0 is Broadcom 4718 (SoC) | ||
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| Radio wl1 is Broadcom 4331 Intensi-fi Single-Chip 802.11n Transceiver | Radio wl1 is Broadcom 4331 Intensi-fi Single-Chip 802.11n Transceiver | ||
Revision as of 20:47, 18 April 2011
Contents |
Hardware Specifications
| CPU | Broadcom BCM4718 |
|---|---|
| CPU Speed | 480 MHz |
| Flash ROM | 16 MB Macronix MX25L12845E |
| RAM | 64 MB |
| Radios | 2.4 GHz, 5 GHz |
| WLAN Support | a/b/g/n |
| WLAN Max Speed | 300mbps (2.4 GHz) & 450mbps (5 GHz) |
| Antenna Location | Internal (x6) |
| Bands | 3 x 3 |
| Switch | 4x GigE + 1 WAN Broadcom 53115 IEEE 802.3/3u/3ab |
| USB | 1x USB 2.0 |
Radio wl0 is Broadcom 4718 (SoC)
Radio wl1 is Broadcom 4331 Intensi-fi Single-Chip 802.11n Transceiver
Flashing
Warnings
- The E4200 is very sensitive to the nvram size. The only safe nvram size identified for this router is an nvram size of 60kB. Recovery from a firmware with the wrong nvram size requires use of a jtag cable to erase the nvram.1
- Support for the E4200 is still very much a work in progress at this time, outstanding issues reported have included WAN stability, and both 2.4GHz and 5GHz Radio stability.
Flashing Process
- Perform these steps when flashing from the stock linksys GUI:
- Disconnect all cables and wireless clients.
- Perform a 30/30/30 reset on the device.
- Flash the latest E4200 specific mini build (dd-wrt.v24-<build number>_NEWD-2_K2.6_mini-e4200.bin) to the router.
- Wait approximately 5 minutes for the flashing process to complete.
- Perform a 30/30/30 after the device has successfully updated.
- Flash to larger build of your choosing (Mega, Big, std_usb_nas, OpenVPN, VoIP.)
- WARNING Only flash -nv60k builds, flashing anything else to the router will brick it as noted above (dd-wrt.v24-<build number>_NEWD-2_K2.6_<build type>-nv60k.bin)
- If flashing to another build always perform a 30/30/30 before and after flashing.
Wireless-N Configuration
- As is explained in http://www.dd-wrt.com/wiki/index.php/Wireless-N_Configuration make sure that you use AES security for your wireless N network. Do not use TKIP or the wireless speed will revert to the g standard and that would be a pity. AES+TKIP is also allowed.
- Both the 2.4 and 5GHz Radios run at a stock transmitting power of 100mW, decreasing the transmitting power to a value between 40 & 50mW has seemed to help stability.
References
- e4200 build thread at dd-wrt forum
- FCC disclosures