Linksys E4200 v1

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abgn (AN750)
Maximum Performance Dual-Band N Router
Linksys E4200 main.jpg
Support
Wikipedia
InfoDepot Wiki
WikiDevi.wi-cat.ru
3rd Party Firmware
dd-wrt
OpenWrt
Status Unknown
Tomato any flavor
Gargoyle
Status Unknown
Platform
BrandModelRev
Linksys E4200 v1
Serial number prefix
01C10C
FCC ID
IC ID
Type
wireless router
CPU1
Broadcom BCM4718A1
CPU1 Type
MIPS 74Kc
CPU1 Speed
480 MHz
Flash1 Chip
Winbond W25Q128BVFG
Flash1 Size
16 MiB16,777,216 B <br />131,072 Kib <br />16,384 KiB <br />128 Mib <br />0.0156 GiB <br /> (SPI)
RAM1 Size
64 MiB67,108,864 B <br />524,288 Kib <br />65,536 KiB <br />512 Mib <br />0.0625 GiB <br />
RAM1 Chip
Winbond W9751G6JB-3
nvram Size
60K
ETH chip1
Broadcom BCM4718A1
Switch
Broadcom BCM53115
Ethernet Port Count
1-1GbE-WAN
4-1GbE-LAN
Wired Standard
IEEE 802.3/3u/3ab

802dot11 OUI: 58:6D:8F (8 E, 8 W), C0:C1:C0 (12 E, 14 W)
Ethernet OUI: 58:6D:8F (8 E, 8 W), C0:C1:C0 (12 E, 14 W)

Stock bootloader
CFE
Stock FW OS
Linux
Expansion IF types
USB 2.0
USB ports
1
USB Hub Compatible
Untested
Power
12 VDC, 2 A
Connector type
barrel
Serial Port (UART)
yes
JTAG Port
yes, (2x connector 2.3 standard)

Additional chips
2.4GHz Power Amplifier IC;Skyworks;SE2528L;SiGe, 2528L, 108EC;2;
2.4/5GHz Front End Module;Skyworks;SE2594L;SiGe, SE2594L, 109HD;3;

Other

Default SSID: CiscoXXXXX (6 addl. devices)
Default IP address: 192.168.1.1
the IP 192.168.1.1 is used by 1308 additional devices
of which 153 are Linksys devices
Default login user: blank
Default login password: admin
blank:admin credentials used by 267 additional devices
of which 134 are Linksys devices

Manuf/OEM/ODM
3rd Party Firmware Support
Retail
Availability common
FCC approval date 20 October 2010
(Est.) release date 19 January 2011
UPC 745883590438
(UPC DB, On eBay)
ASIN B004K1EZDS Flag of the United States.svg
Country of manuf China
Physical
LEDs/Color
top-front 2x White/ back 5x Yellow, 5x Green
Radio 1
Chip1
Broadcom BCM4718A1
Wireless interface OUI
58:6D:8F, C0:C1:C0
Antenna Connector Type
none specified
MIMO status
2x2:2
Wireless Standard
IEEE 802.11b/g/n
802.11n
up to 300 Mbps
802.11g
up to 54 Mbps
802.11b
up to 11 Mbps
WiFi Operating Frequency
2.4 GHz
Radio cor_rev
17
Radio 2
Chip1
Broadcom BCM4331
Wireless interface OUI
58:6D:8F, C0:C1:C0
Antenna Connector Type
U.FL
MIMO status
3x3:3
Wireless Standard
IEEE 802.11a/n
802.11n
up to 450 Mbps
802.11a
up to 54 Mbps
WiFi Operating Frequency
5 GHz
Radio cor_rev
29
 CPU1 brandRadio1 chip1 brandRadio2 chip1 brand
Linksys E4200 v1BroadcomBroadcomBroadcom
Linksys E4200 v2MarvellMarvellMarvell

For a list of all currently documented Broadcom chipsets with specifications, see Broadcom.

For a list of all currently documented Linksys device with specifications, see Linksys.

450 Mbps - 3SS 5GHz 802.11n (40MHz chan.),
300 Mbps - 2SS 2.4GHz 802.11n (40MHz chan.) = AN750 class

Overview

"3763-40700105R" and the Cisco logo is silkscreened on the board.

This router uses Galtronics antennas.
Note: Three antennas are used by the 2.4 GHz radio, but it's still a 2T2R radio..

The default SSID pattern for this device is CiscoXXXXXX on both bands,

where XXXXX is the last 5 characters of the serial number.

Wi-Fi Certified : WFA9933 (as of 10/18/2010)

Links of Interest

Wikis

Reviews

Forum threads

The v1 serial numbers appear to start with 01C10C..

Firmware projects

This device is supported by...

Flashing

Flashing dd-wrt

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:
  1. Disconnect all cables and wireless clients.
  2. Perform a 30/30/30 reset on the device.
  3. Flash the latest E4200 specific mini build (dd-wrt.v24-<build number>_NEWD-2_K2.6_mini-e4200.bin) to the router.
    1. The E4200 specific mini builds are also -nv60k builds, they just aren't labeled as such.
  4. Wait approximately 5 minutes for the flashing process to complete.
  5. Perform a 30/30/30 after the device has successfully updated.
  6. Flash to larger build of your choosing (Mega, Big, std_usb_nas, OpenVPN, VoIP.)
    1. 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)
  7. If flashing to another build always perform a 30/30/30 before and after flashing

Flashing Tomato

Upgrading

Upgrading dd-wrt

If dd-wrt 17084 and up is already on the router, builds with nv60k in the name can be used for upgrade.

Reverting

Reverting dd-wrt

  • You can always revert back to stock firmware.
  • Download the latest E4200 firmware from linksys site.
  1. Disconnect all cables and wireless clients.
  2. Perform a 30/30/30 reset on the device.
  3. Login and select the stock firmware file and flash, make sure to select "reset to defaults" on the drop down menu when flashing.
  4. Wait approximately 5 minutes for the flashing process to complete.
  5. Perform a 30/30/30 after the device has successfully updated.

USB Info

DD-WRT USB

  • The USB port is where you can connect an external USB hard drive or flash drive. Which can do a multitude of things. You can use in as a NAS, storage for a FTP server, use Optware to run external programs like torrent software, samba for sharing files to network, share a USB printer with network... The list of possibilities is long, it just takes a little research.
  • ProFTPd, samba, dlna, raid support is included in most the newer builds of dd-wrt. Check the features chart to be sure.

Pictures

Notes

nv60k

Eko

Just a note on upgrading e2000, e3000 and e4200 routers already running dd-wrt. These need -nv60k.bin builds, but this will work only from now on. So for initial upgrade use proper mini-eXXXX.bin build and then upgrade with -nv60k.bin build. If you flash a -nv64k.bin, your E4200 will bricked!

Wireless-N Configuration

  • 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.

5GHz Wireless Transfer Speed Tips

These are suggestions that are being recommended inside the E4200 forums thread to improve wireless performance on the 5GHz radio. Recommendation from LiteUp! and basmaf

  • Enable Frame burst
  • Set Afterburner to Auto (this will only have an effect if your wireless clients use Broadcom radios. Disable Afterburner, if you use two Routers in AP <->Client Bridge-Mode)
  • Highest transfer rates are being achieved on channels 100-128. Do not set channel to Auto!
  • Be patient, let SNR settle down before testing speeds.