ASUS RT-N66W OpenWrt Firmware
- CPU
- Broadcom BCM4706
- RAM
- 256 MB
- Flash
- 32 MB
The ASUS RT-N66W is supported by OpenWrt/ImmortalWrt on the bcm47xx/mips74k target. 2 firmware images are available from the official OpenWrt 25.12.5 and ImmortalWrt 25.12.1 stable releases — download one below, or build a custom OpenWrt image for this device with your own package selection.
Specs
Specifications
| CPU | Broadcom BCM4706 |
|---|---|
| CPU cores | 1 |
| CPU frequency | 600 MHz |
| RAM | 256 MB |
| Flash | 32 MB |
| 1 Gbit Ethernet ports | 5 |
| WLAN hardware | 2x Broadcom BCM4331 |
| Switch | Broadcom BCM53125 |
Hardware data from the OpenWrt Table of Hardware; verify against your unit before flashing.
Build matrix
Supported firmware versions
| Distribution | Version | Target | Profile |
|---|---|---|---|
| OpenWrt | 25.12.5 | bcm47xx/mips74k | asus_rt-n66w |
| ImmortalWrt | 25.12.1 | bcm47xx/mips74k | asus_rt-n66w |
Downloads
Download images
OpenWrt 25.12.5 · bcm47xx/mips74k
| Image | Type | sha256 |
|---|---|---|
| openwrt-25.12.5-bcm47xx-mips74k-asus_rt-n66w-squashfs.trx | trx | 22fdbb1a5ac0… |
ImmortalWrt 25.12.1 · bcm47xx/mips74k
| Image | Type | sha256 |
|---|---|---|
| immortalwrt-25.12.1-bcm47xx-mips74k-asus_rt-n66w-squashfs.trx | trx | dfa21cb61954… |
Downloads are served by the official OpenWrt/ImmortalWrt mirrors — unchanged upstream stable builds.
Packages & install
Default packages & installation
Default packages
Every image for the ASUS RT-N66W ships these packages by default. The customize option below lets you add or remove packages before the image is assembled.
OpenWrt 25.12.5 · bcm47xx/mips74k
Device packages (3)
kmod-b43 kmod-usb-ohci kmod-usb2
Target default packages (30)
apk-mbedtls base-files ca-bundle dnsmasq dropbear firewall4 fstools kmod-gpio-button-hotplug kmod-leds-gpio kmod-nft-offload libc libgcc libustream-mbedtls logd mtd netifd nftables nvram odhcp6c odhcpd-ipv6only otrx ppp ppp-mod-pppoe procd-ujail swconfig uci uclient-fetch urandom-seed urngd wpad-basic-mbedtls
ImmortalWrt 25.12.1 · bcm47xx/mips74k
Device packages (3)
kmod-b43 kmod-usb-ohci kmod-usb2
Target default packages (34)
apk-openssl base-files block-mount ca-bundle default-settings-chn dnsmasq-full dropbear firewall4 fstools kmod-gpio-button-hotplug kmod-leds-gpio kmod-nf-nathelper kmod-nft-offload libc libgcc libustream-openssl logd luci mtd netifd nftables nvram odhcp6c odhcpd-ipv6only otrx ppp ppp-mod-pppoe procd-ujail swconfig uci uclient-fetch urandom-seed urngd wpad-basic-openssl
Installation notes
- Verify your download against the published checksum before flashing:
$ sha256sum openwrt-25.12.5-bcm47xx-mips74k-asus_rt-n66w-squashfs.trx 22fdbb1a5ac0eb43008d8da92343d67760d087b6b9a564dfd57e580e4587bebf openwrt-25.12.5-bcm47xx-mips74k-asus_rt-n66w-squashfs.trx
Build custom firmware
Need more than the default image for the ASUS RT-N66W? Pick your packages — LuCI apps, themes, VPN clients — set the basics, and get a ready-to-flash OpenWrt image assembled from official packages in minutes.
Customize firmware for this deviceRelated
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More ASUS devices
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- ASUS Lyra Mini (MAP-AC1300) OpenWrt firmware
- ASUS OnHub SRT-AC1900 OpenWrt firmware
- ASUS PL-AC56 A1 OpenWrt firmware
- ASUS RP-AC51 OpenWrt firmware
- ASUS RP-AC56 OpenWrt firmware
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Upstream
Upstream & source
- downloads.openwrt.org — bcm47xx/mips74k 25.12.5
- downloads.immortalwrt.org — bcm47xx/mips74k 25.12.1
- OpenWrt Table of Hardware
Images are assembled from packages compiled and published by the upstream OpenWrt and ImmortalWrt projects. The complete corresponding source code is available from those projects under the GPL.