wpj428/doc/flash.md

Flash OpenWRT from uboot

(Configure your computer with a static IP address 192.168.1.2/24 and make sure you have a running tftp server containing your image)

First connect your UART cable on the router:

Launch minicom

sudo minicom -D /dev/ttyUSB0

Then boot the router. Press repeatidly [ENTER] to get the following prompt:

(IPQ40xx) #

Then enter the following commands:

set ipaddr 192.168.1.1
set serverip 192.168.1.2
ping ${serverip}
sf probe
tftpboot 0x84000000 openwrt-ipq40xx-generic-compex_wpj428-squashfs-sysupgrade.bin
sf erase 0x00180000 +$filesize
sf write 0x84000000 0x00180000 $filesize
bootipq

Flash OpenWRT from OpenWRT (!)

Copy the firmware in router's /tmp. Why /tmp? Your router has more volatile storage than persistent one, moreover you will overwrite the persistent storage. So, copy the firmware in /tmp!
If you have a ssh connection, you can use scp ./path/source/ userDest@ipDest:/tmp
Next, we will use the sysupgrade command. -v is verbose, -n ask openwrt to erase configuration files (ie. ask for a factory reset).

sysupgrade -v -n /tmp/openwrt-ipq40xx-generic-compex_wpj428-squashfs-sysupgrade.bin

Flash OpenWRT from LuCi

With your binary image, you can flash from LuCi interface.
System -> Backup/Flash Firmware
You can Uncheck the "Keep Settings", if you suppose than the problem come from a corruption of settings or you want erase the settings.

Flash OpenWRT from Compex ROM (MimoAP)

Not written

Flash MimoAP/OpenWRT with Compex tools on Uboot

Not written