Linksys E4200 v1

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abgn (AN750)
Maximum Performance Dual-Band N Router
Linksys E4200 main.jpg
Support Support page
Wikipedia Linksys routers
InfoDepot Wiki Linksys E4200 v1.0
WikiDevi.wi-cat.ru Linksys E4200 v1
3rd Party Firmware
dd-wrt Supported
OpenWrt Partial Support
Tomato any flavor Supported
Gargoyle Status Unknown
Platform
BrandModelRev Linksys E4200 v1
Serial number prefix 01C10C
FCC ID Q87-E4200
IC ID 3839A-E4200
Type wireless router
CPU1 checkY 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 802.3i/3u/3ab

802dot11 OUI: 58:6D:8F (9 E, 9 W), C0:C1:C0 (13 E, 15 W)
Ethernet OUI: 58:6D:8F (9 E, 9 W), C0:C1:C0 (13 E, 15 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 1335 additional devices
of which 155 are Linksys devices
Default login user: blank
Default login password: admin
blank:admin credentials used by 284 additional devices
of which 135 are Linksys devices

Manuf/OEM/ODM CyberTAN
3rd Party Firmware Support DD-WRT • (List)
, Tomato (Shibby) • (List | DLs)
, TomatoUSB RAF (Victek) • (List | DLs)
Retail
Availability End of Life
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 devices 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.

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 OpenWrt

On the OpenWrt ToH (techdata entry)
On the OpenWrt Wiki
On the OpenWrt Forum
OpenWrt Target: bcm47xx
OpenWrt Subtarget: mips74k
OpenWrt Package architecture: mipsel_74kc
Support started version: 14.07
Current supported version: 24.10.0
Unsupported Functions:
WiFi 5GHz
Comment:
This router has a 5 GHz radio, but as of OpenWrt 19.07.3 r11063-85e04e9f46, the 5 GHz radio only operates as 2.4 GHz,

Please insert instructions here

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.