The devolo WiFi pro 1200e is a wall mountable access point with:
|Model||Version||Current Release||Firmware OpenWrt Install||Firmware OpenWrt Upgrade||Firmware OEM Stock|
|WiFi pro 1200e||19.07.3||http://downloads.openwrt.org/releases/19.07.3/targets/ath79/generic/openwrt-19.07.3-ath79-generic-devolo_dvl1200e-squashfs-sysupgrade.bin||https://www.devolo.de/support/downloads/download/devolo-wifi-pro-1200e.html|
Set a password for the root user as prompted on first set-up of OEM firmware.
/tmpas the destination folder on the device. User is root, password previously set in the web interface.
sysupgrade -n -F /tmp/<openwrt-image-name>
There is a pin header labeled J2 soldered into the board already that you can connect to. Looking at the board, when the reset button is facing up, J2 is located close to the “golden square” in the center of the board, straight below the reset button. It is a 4 pin header aligned vertically with the pins being:
Close-up of serial header::