build new firmware for new device

hi everyone,

i've been trying to compile my own aredn firmware. folowing the github https://github.com/aredn/aredn
i'm using ubuntu(focal).building firmware images was okay(success, not really tested it though)

further more, i want to build my own firmware, with my own device that's not listed on supported hardware.
it's mikrotik RB951G-2HnD and RB951UI-2HnDboth has wireless and 5 ethernets). after digging for days this is what i added to existing files.
i cannot find any exact procedures/tutorial on how to build a new device firmware.

configs/ath79-mikrotik.config

CONFIG_TARGET_DEVICE_ath79_mikrotik_DEVICE_mikrotik_routerboard-951g-2hnd=y
CONFIG_TARGET_DEVICE_ath79_mikrotik_DEVICE_mikrotik_routerboard-951ui-2hnd=y

files/etc/radios.json

  "mikrotik routerboard RB951G-2HnD": {
    "wlan0": {
      "maxpower": 22,
      "bandwidths": [ 5, 10, 20 ],
      "antenna": {
        "description": "1.5 dBi Omni",
        "gain": 1.5,
        "beamwidth": 360
      }
    }
  },
  "mikrotik routerboard RB951UI-2HnD": {
    "wlan0": {
      "maxpower": 22,
      "bandwidths": [ 5, 10, 20 ],
      "antenna": {
        "description": "1.5 dBi Omni",
        "gain": 1.5,
        "beamwidth": 360
      }
    }
  },

after that i just execute the build

make SUBTARGET=mikrotik

it compiled without error(that stop compile process)

results:

hari@APRS aredn ((HEAD detached at 3.24.6.0)) $ ls firmware/targets/ath79/mikrotik/
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-951g-2hnd-initramfs-kernel.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-951g-2hnd-squashfs-sysupgrade.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-951ui-2hnd-initramfs-kernel.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-951ui-2hnd-squashfs-sysupgrade.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-952ui-5ac2nd-initramfs-kernel.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-952ui-5ac2nd-squashfs-sysupgrade.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-ldf-2nd-initramfs-kernel.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-ldf-2nd-squashfs-sysupgrade.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-ldf-5nd-initramfs-kernel.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-ldf-5nd-squashfs-sysupgrade.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-lhg-2nd-initramfs-kernel.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-lhg-2nd-squashfs-sysupgrade.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-lhg-2nd-xl-initramfs-kernel.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-lhg-2nd-xl-squashfs-sysupgrade.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-lhg-5hpnd-initramfs-kernel.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-lhg-5hpnd-squashfs-sysupgrade.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-lhg-5hpnd-xl-initramfs-kernel.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-lhg-5hpnd-xl-squashfs-sysupgrade.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-lhg-5nd-initramfs-kernel.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-lhg-5nd-squashfs-sysupgrade.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-sxt-2nd-initramfs-kernel.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-sxt-2nd-squashfs-sysupgrade.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-sxt-5hpnd-initramfs-kernel.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-sxt-5hpnd-squashfs-sysupgrade.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-sxt-5nd-initramfs-kernel.bin
aredn-yd0bcx--b3298b1-ath79-mikrotik-mikrotik_routerboard-sxt-5nd-squashfs-sysupgrade.bin
config.buildinfo
feeds.buildinfo
packages
profiles.json
sha256sums
version.buildinfo

my builds listed on the directory.

the questions are, am i missed the steps?, or what exactly procedures for building new firmware/devices.
i cannot find any tutorial for adding new aredn firmware. try to flashed it using tinypxe, console said DoReadfile: rt.bin
ACT led blinking and then ACT led on steadily, there's red light trin on inside the devices.i think process stopped.
rebooted devices and my winbox still can access routeOS :D. it failed but not bricking the devices.i've been retry so many times.
until i post this.

maybe someone can give me enlightenment and lead me to the right directions.
anyway, it's fun though, i once built native openwrt firmware for those devices and it work, forgot which one RB92G or RB951UI :-) 

TIA
Hari