802.11ac Dual-Band Wireless-AC1200 Gigabit Router
- Model Num: 90IG0060-BM3G20
- Wireless-AC1200, AiCloud support
- Linux kernel 184.108.40.206 (brcmarm)
- The FCC test report specifies the manufacturer of the device as Compal
- (Compal Networking [KunShan]), however, the FCC photos show the board w/
- standard Arcadyan (of which it appears Compal has a significant stake in)
- labels on it (model: Arcadyan WG6117EAC22-ASU)
- PCB in the FCC photos
- "RT-AC56U REV 1.60" is silkscreened on the (red) PCB
- "RT-AC56U REV 2.00" is silkscreened on the (blue) PCB
- (Broadcom BCM4708A0 per FCC photos), Broadcom BCM43217/BCM4352
- WLAN: 2T2R 802.11n 300Mbps (2.4GHz), 802.11ac 867Mbps (5GHz)
- RAM: ESMT M15F2G16128A-ADB DDR3-1600 (800/667/533MHz)
- USB: 1x USB 2.0, 1x USB 3.0
- CES 2013: New ASUS Networking Solutions on Asus
- ASUS RT-AC56U Dual-Band Wireless AC1200 Router on guru3d
- CES 2013 Day 0 - ASUS Networking Products on Asus
- Inside Story: ASUS RT-AC56U & RT-AC68U on SmallNetBuilder
- ASUS RT-AC56U Router Preview on Techinstyle
- Review on Techbang
- On HardwareZone
- On VR-Zone
- GPIO (active_low):
- 0 - USB 3.0 LED
- 1 - WAN (Internet) LED
- 2 - LAN LED
- 3 - Power LED
- 4 - All LED *
- 5 - Wi-Fi 2.4GHz LED
- 6 - Wi-Fi 5GHz LED
- 7 - Wi-Fi On/Off Button
- 11 - Reset Button
- 14 - USB 2.0 LED
- 15 - WPS Button
- All LED * disable:
- gpio enable 3
- gpio enable 4
- Asuswrt-Merlin - custom firmware for Asus routers
- DD-WRT Forum - Support is experimental (r21676)
- DD-WRT support: SVN commit 20981
- Asus RT-AC56U OpenWrt
- Note: While OpenWrt is supported, there is no support for the AC radio
- (there is no open-source driver for BCM4352 and you cannot use wl).
- Tomato Flash Guide
Note: some people say you need to install DD-WRT first. I do NOT recommend anyone to install DD-WRT first before installing Tomato on Asus routers.
- Download a suitable tomato firmware
- Install the Asus router utility from the CD that came with the router. Run \Utility\setup.exe from the CD to install it. If you no longer have the CD you can also download it from the Asus website.
- Disable Firewall on your computer.
- Disable anti-virus on your computer.
- Connect your computer to one of the LAN ports of the router with an ethernet cable.
- Assign a static IP of 192.168.1.10 and subnet mask 255.255.255.0 to your computer LAN port.
- Disconnect the router WAN port if you already have a cable plugged into that port.
- From Windows Start menu, run ASUS Utility -> RT-N Wireless Router -> Firmware Restoration.
- Click the Browse button and select the file that you downloaded in step #1. Don’t click the upload button yet.
- Put the router in recovery mode: Unplug the power cord of the router. Hold down the black Restore button using a pen (not the red button). Plug the power cord back in. Once the power light starts flashing slowing, release the Restore button. The power light should continue to flash. The flashing light means the router is ready to accept the new firmware in recovery mode.
- Click the upload button in the Restoration utility. If it warns about incorrect Asus firmware, ignore it. The firmware should now start uploading into the router. Don’t touch anything while the firmware is being uploaded. (Note: these steps worked when I flashed my RT-N16. However, the utility could not find my RT-N12 B1 when I tried to flash the router, although it did work for other people. After failing for more than a dozen times, I tried to perform the upload first before putting the router in recovery mode, then it finally worked. Later I tried a different unit of RT-N12 B1 strangely it could be flashed the first time using the normal procedure. If neither of these procedures work, please see the Addendum in The Wiert Corner, and the tftp method described by Simeon W in the comments section.)
- No matter whether the utility says the upload is completed, or it hangs at a certain percent, DO NOT PANIC, and WAIT FOR FIVE MINUTES before you do anything else.
- After five minutes, open a browser and go to http://192.168.1.1. Login with user “admin” (or “root”) and password “admin”. You should be logged into Tomato.
- Administration -> Configuration -> Restore Default Configuration -> Erase all data in NVRAM memory(thorough) -> OK (Note: there is a forum report saying this reset function does not work properly on RT-N53 – in this case, try the hardware reset button.)
- After it is completed, login again, enable DHCP (for Toastman Builds), change admin password, enable WiFi security if you use WiFi, plug in your WAN connection and configure it. Also take a look at the CPU frequency, you may need to manually change it if it is not correct. (Note: overclocking your router is usually not a good idea from my experience.)
- Change your computer LAN port back to use DHCP (dynamic address) and dynamic DNS.
Wiert Corner method
- pull the power plug on the RT N66U
- press and hold the reset button
- insert the power plug on the RT N66U
- wait for the power led to slowly blink
- release the reset button
- wait a few minutes for the modem to become stable
- in the mean time set your PC to these IPv4 settings: – host =
192.168.1.100– mask =
- start your web-browser
- point your web-browser to
http://192.168.1.1(it will time out, don’t worry)
- press the power button to turn off the router
- wait a few seconds
- press the power button to turn on the router now your router gets into rescue mode
- refresh your browser so it goes to
- upload your Tomato firmware
Put the router into recovery mode, set a static IP address on the computer then run in the shell:
Wait several minutes while firmware transfers and router updates. Reboot twice, waiting 3 minutes in between each reboot, and the router should now have tomato installed.
- Asus Wireless AC networking solutions
- Asus Routers with DD-WRT firmware support
- AsusWRT Support List
- Devices ASUS Routers