Is there any hope for getting OpenWRT onto an older x20 1.26? Perhaps with the same firmware v1.1.8(for 1.x hardware of course)? I have one sitting in my closet I'd love to use as a OpenWRT AP.
I am not afraid of opening this thing up and connecting to the UART.
...So I did and I have a Raspberry Pi connected via UART and I can drop to a failsafe prompt.
$ sudo minicom -D /dev/ttyAMA0
On the 1.26 board, TP5 is TX, TP6 is RX, and TP7 is GND. Connect up the X20 TX to the Raspberry Pi RX, and vice versa for the X20's RX to the Pi's TX. Connect TP7/GND on the X20 to one of the GND pins on the Pi's GPIO.
Now I'm just not sure where to go from here.
Last edit. It's just dawning on me that this Deco X20 is running OpenWRT Chaos Calmer already, only with a coat of TP-Link paint. Surely this can be freed from the proprietary nonsense?