Hi! I have something similar going on here, too. I am using the following firmware: openwrt-19.07.7-brcm47xx-mips74k-asus-rt-n53-squashfs.trx on an ASUS RT-N53 router. The wired networking works great, and the WebUI pops up. But no wifi. Here is the output of the command you previous requested for the OP:
root@OpenWrt:~# ubus call system board
{
"kernel": "4.14.221",
"hostname": "OpenWrt",
"system": "Broadcom BCM5357",
"model": "Asus RT-N53",
"board_name": "0x0550:08:60:6e:b9:ad:13",
"release": {
"distribution": "OpenWrt",
"version": "19.07.7",
"revision": "r11306-c4a6851c72",
"target": "brcm47xx/mips74k",
"description": "OpenWrt 19.07.7 r11306-c4a6851c72"
}
}
Any help would be greatly appreciated!