i have an asus rog rapture gt-ac5300. it was working fine when suddenly there was a power interruption that cause may router to soft brick... cant access the web gui. i mange to do re restoration and upload the latest firmware but the 5ghz connection drops/disconnecting from time to time. so i restore the later firmware which is gt-ac5300_184.108.40.206_384_81695-gfade4d7_cferom_ubi.w, i restored it but all the wifi mac address is gone, no wifi connection, only lan conection is working, also also the internet access but wifi is totally gone the 3 bands of wifi do not exist. i tried hard reset but wif mac is not appearing. i itry to restore thru ssh but cant pass here it says mtd-write2: not found, do i neat a usb to ttl cable to make it work. i tried to follow this video..