Please check out the article Flash Layout. It contains an example and a couple of explanations.
|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.
|Bootloader tftp server IPv4 address||FILL-IN|
|Bootloader MAC address (special)||FILL-IN|
|Firmware tftp image|| http://downloads.openwrt.org/FILL-IN/openwrt-FILL-IN-generic-FILL-IN-squashfs-tftp.bin (
|TFTP Transfer Window||FILL-IN seconds|
|TFTP Window Start||approximately FILL-IN seconds after power on|
|TFTP Client Required IP Address||FILL-IN|
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.
cd /tmp/ wget http://downloads.openwrt.org/snapshots/trunk/XXX/xxx.abc sysupgrade /tmp/xxx.abc
cd /tmp/ wget http://downloads.openwrt.org/snapshots/trunk/XXX/xxx.abc mtd write /tmp/xxx.abc 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||192.168.1.1/24|
|vlan0 (eth0.0)||LAN ports (1 to 4)||None|
|vlan1 (eth0.1)||WAN port||DHCP|
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.
Photo of front of the casing
Photo of back of the casing
→ port.serial general information about the serial port, serial port cable, etc.
How to connect to the Serial Port of this specific device:
5 4 3 2 1 | o o o o o | ------------' 5. GND 4. GND 3. TxD 2. RxD 1. 3.3v? 115200,8,n,1
→ port.jtag general information about the JTAG port, JTAG cable, etc.
How to connect to the JTAG Port of this specific device:
Photo of PCB with markings
For some Help with the Tags, please have a look here: tags