Linksys E3200

A simultaneous dual-band gigabit model with USB storage link.

Devices with Broadcom WiFi chipsets have limited OpenWrt supportability (due to limited FLOSS driver availability for Broadcom chips). Consider this when chosing a device to buy, or when deciding to flash OpenWrt on your device because it is listed as supported. See Broadcom WiFi for details.

ModelVersionSoCCPU MHzFlash MBRAM MBWLAN HardwareWLAN2.4WLAN5.0100M portsGbit portsModemUSB
E32001.0Broadcom BCM471865001664Broadcom BCM47186, Broadcom BCM43236b/g/na/n-5-1x 2.0

Please check out the article flash.layout. It contains an example and a couple of explanations.

4 MTD partitions on “sflash”:

Addresses Name
0x00000000-0x00040000 boot
0x00040000-0x00ff0000 linux
0x001b9800-0x00ff0000 rootfs
0x00ff0000-0x01000000 nvram
cat /proc/mtd
dev:    size   erasesize  name
mtd0: 00040000 00010000 "cfe"
mtd1: 00fb0000 00010000 "linux"
mtd2: 00ec9000 00010000 "rootfs"
mtd3: 00b90000 00010000 "rootfs_data"
mtd4: 00010000 00010000 "nvram"
FIXME The instructions below are for Broadcom devices and only serve as an example. Don't leave them in place if they do not apply to a particular device!

This section deals with how you install OpenWrt from a device freshly opened. Plus the steps required such as reset to factory defaults if the device has already been configured

Note: Reset router to factory defaults if it has been previously configured.

If you want to upgrade using TFTP you follow these steps (as an alternative to the above install process.


If you have already installed OpenWrt and like to reflash for e.g. upgrading to a new OpenWrt version you can upgrade using the mtd command line tool. It is important that you put the firmware image into the ramdisk (/tmp) before you start flashing.

LuCI Web Upgrade Process

Terminal Upgrade Process

  • Login as root via SSH on
  • Use the following commands to upgrade.
cd /tmp/
sysupgrade /tmp/
  • If sysupgrade does not support this router, use the following commands.
cd /tmp/
mtd write /tmp/ linux && reboot

Basic configuration After flashing, proceed with this.
Set up your Internet connection, configure wireless, configure USB port, etc.

The default network configuration is:

Interface Name Description Default configuration
br-lan LAN & WiFi
vlan0 (eth0.0) LAN ports (1 to 4) None
vlan1 (eth0.1) WAN port DHCP
wl0 WiFi Disabled

Numbers 0-3 are Ports 1-4 as labeled on the unit, number 4 is the Internet (WAN) on the unit, 5 is the internal connection to the router itself. Don't be fooled: Port 1 on the unit is number 3 when configuring VLANs. vlan0 = eth0.0, vlan1 = eth0.1 and so on.

Port Switch port
Internet (WAN) 4
LAN 1 3
LAN 2 2
LAN 3 1
LAN 4 0

hardware.button on howto use and configure the hardware button(s).


The Linksys WRT54GL has two buttons. They are Reset and Secure Easy Setup. Here, we merely name the buttons, so we can use them in the above Howto:

Reset reset
Secure Easy Setup ses
Architecture MIPS
Vendor Broadcom
bootloader CFE
System-On-Chip Broadcom BCM47186B0
CPU/Speed 500 MHz
Flash-Chip Winbond 25Q128BUFG
Flash size 16 MiB
RAM 64 MiB
Wireless Broadcom BCM47186B0 on chip 2.4GHz 802.11bgn
Wireless Broadcom BCM43236 5GHz 802.11a
Switch 10/100/1000 BCM53125SKMMLG
Ethernet RealTek RTL8366RB Gigabit w/ vlan support swconfig
Internet n/a
USB Yes 1 x 2.0
Serial Yes

port.serial general information about the serial port, serial port cable, etc.

How to connect to the Serial Port of this specific device:

3.3v TTL Serial console (red circle) for Processor (DJ2)

Pad 1 3.3v Pad 2 TX Pad 3 RX Pad 4 Not Connected Pad 5 GND

Pad one (square pad) is VCC !

CFE version 1.0.37 for BCM947XX (32bit,SP,LE)
Build Date: Thu Apr 21 02:03:27 HKT 2011 (zhaoguang@sw1)
Copyright (C) 2000-2008 Broadcom Corporation.

3.3v TTL Serial console for Radio Device (DJ9)

Pad 1 3.3v Pad 2 TX Pad 3 RX Pad 4 Not Connected Pad 5 GND

Pad one (square pad) is VCC !

RTE (usbrdl) v5.100 (TOB) running on BCM43236 r2 @ 20/120/120 MHz.
rdl0: Broadcom USB Remote Download Adapter
ei 1, ebi 2, ebo 1

port.jtag general information about the JTAG port, JTAG cable, etc.

How to connect to the JTAG Port of this specific device:

Above Processor Serial Port is Processor JTAG (DJ1)

2 4 6 8 10 12
1 3 5 7 9 11

FIXME not tested yet but seems to be linksys default

Above Radio Serial Port is Radio JTAG (DJ8)

2 4 6 8 10 12
1 3 5 7 9 11

FIXME not tested yet but seems to be linksys default


send firmware (.bin) as “code.bin” with tftp to

flash -ctheader : flash1.trx

CFE> flash -ctheader : flash1.trx
CODE Pattern is CORRECT!
upgrade_ver[v1.0.4] upgrade_ver[10004] 4712_ver[0]
Done. 10679296 bytes read
CODE Pattern is correct! (3200)
Programming...done. 10679264 bytes written
*** command status = 0

CFE> go
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  • Last modified: 2020/09/14 19:12
  • by damncourier