For a list of all currently documented Broadcom chipsets with specifications, see Broadcom.
802.11ac Dual-Band Wireless-AC1750 Gigabit Router
"RT-AC66U" and "REV 1.30" is silkscreened on the (blue) board in the FCC photos.
The FCC label states the default SSID is ASUS.
- 1 802.11ac Dual-Band Wireless-AC1750 Gigabit Router
- 2 Links of Interest
- 3 Flashing
- 4 Upgrading
- 5 USB Info
- 6 Pictures
- 7 Notes
- 8 See Also
Links of Interest
- ASUS Reveals the Next Generation 802.11ac RT-AC66U Router on Asus
- NETGEAR Suing ASUS For Wireless Hanky Panky on SmallNetBuilder
- 10:BF:48 OUI on the label in the internal photos
- UPC: 886227214341, EAN: 4716<?>4342,
- OUI: 10:BF:48, rev. A1, mfg. year 2012
- CPU: Broadcom BCM4706KPBG MIPS74K, @600MHz
- Flash: Samsung K9F1G08U0D-SCB0 128MB, SLC
- RAM: 2x Samsung K4T1G164QF-BCF7 256MB, DDR2 @800MHz
- 2.4GHz: Broadcom BCM4331KMLG + 3x PA (E0GB 2AKC 216A)
- 5GHz: Broadcom BCM4360KMLG + 3x PA (5003L1 210ED 1210)
- SiGe SE5003L, 23dBm (200mW) Datasheet
- Switch: Broadcom BCM53125SKMML 1GbE
- New Asus RT-AC66U router (5G 802.11ac) on wl500g.info
- On the DD-WRT forums (w/ DD-WRT test build and internal images
- posted by Magnetron1.1 [hosted on Mediafire], official support added
- in build 20873 - 20130308 [per the DD-WRT wiki])
- 50:46:5D OUI on a label shot in the thread
- 08:60:6E OUI on a DD-WRT build shot in the thread
- A later revision A2 model in the thread has "RT-AC66U" and "REV 1.60"
- silkscreened on the board.
- Serial log indicates the device has an additional 2MB Serial Flash chip
|NOTE: During configuration or flashing a device, the only things that should be hooked to the device is the computer and power.|
- Download firmware image here
- Set static ip of 192.168.1.7
- reset to defaults in Asus GUI or in recovery mode
- In recovery mode, upload BrainSlayer's file
- Give the router plenty of time to flash and reboot.
- Once able browse to 192.168.1.1, if you see the change password screen of dd-wrt then
- do a hard reset which puts the router in recovery mode, select erase nvram and reboot.
- If you donot see the change password screen start over from step 1.
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.
If dd-wrt is already on the router follow these instructions. If stock firmware is on the router follow the flashing instructions.
- Check for recommended builds here first.
- Set your computer to a static IP of 192.168.1.7. (or to whatever subnet the router is on) Disable all firewalls and security. Disable wireless on your computer and only have the router connected to the flashing computer by the ethernet cable between the two.
- Hard reset or 30/30/30 (If the router supports it, if not, reset to defults in the GUI) prior to flashing. Wait. Check for password page on re-login and change password.
- Flash firmware. You can use the webgui except if you have a belkin router. (For belkin use tftp.exe to flash)
- Wait...at least three minutes. Lights should return to normal. See important2, below. Failing to wait is how most people brick their routers.
- Do a power cycle of the router. (Unplug the cord, count to 30 and plug it back in.)
- Wait for the lights to return to normal usually about 2 minutes.
- Hard reset or 30/30/30 again (If the router supports it, if not, reset to defults in the GUI). Wait. Check for the password page and re-login to change the password. Then you can reconfigure your settings manually.
- Once configured set your computer back to autoIP and autoDNS.
Important1: This Hard reset or 30/30/30 works fine for Asus router, but you do have to power cycle after the reset.
Important2: After you flash the firmware, and before you do the hard reset, the router will be building some nvram settings. YOU MUST WAIT FOR THIS TO FINISH PRIOR TO DOING ANYTHING WITH THE ROUTER INCLUDING A HARD RESET. Usually, you can tell when this process is completed by the WAN light coming on, but it does take several minutes. Go have a beer. There are starting to be more and more people who BRICK their routers by not waiting until the nvram is rebuilt, PRIOR to doing a hard reset. YOU NEED TO WAIT!
- The USB port is where you can connect an external USB hard drive or flash drive.
- Which can do a multitude of things. You can use in as a NAS, storage for a FTP
- server, use Optware to run external programs like torrent software, samba for
- sharing files to network, share a USB printer with network...
- The list of possibilities is long, it just takes a little research.
- ProFTPd is included in most the newer builds of dd-wrt.
- Check the features chart to be sure.
TomatoUSB comes with file sharing, ftp server and media server built in.
jffs Issue in DD-WRT
This problem is caused by the firmware encountering an unmarked bad block during an erase operation while attempting to setup a JFFS2 filesystem on device /dev/mtd/4.
Most people will probably never experience this problem. The AC66U, the D1800H, and the Buffalo WLI-H4-D1300 Media Bridge use the same Samsung flash memory chip. In my case, 4 of my 5 D1800H's had the problem but my D1300 didn't. Neither of my AC66U's had the problem. One person on one of the AC66U threads reported having the problem; here's a link to his post.
If you have the problem, you will not be able to create or copy directories and files to /jffs. Here are some example error messages:(this list was shortened to save space - it can go on for several pages)
Also the Status -> Router webpage will show that JFFS2 has no free space.
To fix this problem try the following at a command line prompt:
This command erases and marks bad any bad blocks encountered so that they can be "skipped"
- and formats the partition to JFFS2 specifications.
- I believe the firmware uses the mtd erase command which seems to fail at handling bad blocks.
- The flash_erase command needs to be run only once.
Trouble with recovery mode
I just want to give a tip for anybody who has trouble getting into recovery mode. I didn't find this simple information on the internet yet. First, some context:
I flashed a Brainslayer build from a Fractal build, and then my router stopped responding to ping. When booting normally, the power and ethernet LEDs would light up. The same thing happened when booting up with the reset button pressed, which should have put into recovery mode, but didn't. When booting up with the WPS button pressed, the power LED would flash and clear the NVRAM. The router then started up and enabled the two radios, broadcasting a "dd-wrt" SSID, but still no ping.
To force it into recovery mode:
Set a static IP of 192.168.1.2 Press the WPS button and start up Let the power LED flash rapidly for 5 seconds, then release WPS Immediately press the reset button, keeping it pressed until the power LED flashes slowly Release the reset button Point your browser to 192.168.1.1
wl -i eth1 revinfo (BCM4331)
admin@RT-AC66U:/tmp/home/root# wl -i eth1 revinfo vendorid 0x14e4 deviceid 0x4332 radiorev 0x2059000 chipnum 0x4331 chiprev 0x2 chippackage 0x8 corerev 0x1d boardid 0xf5b2 boardvendor 0x14e4 boardrev P100 driverrev 0x61e271f ucoderev 0x2f10071 bus 0x1 phytype 0x7 phyrev 0x1 anarev 0x0
wl -i eth2 revinfo (BCM4360)
admin@RT-AC66U:/tmp/home/root# wl -i eth2 revinfo vendorid 0x14e4 deviceid 0x43a2 radiorev 0x32069000 chipnum 0x4360 chiprev 0x2 chippackage 0x1 corerev 0x28 boardid 0x621 boardvendor 0x14e4 boardrev P305 driverrev 0x61e271f ucoderev 0x2f10071 bus 0x1 phytype 0xb phyrev 0x0 anarev 0x0
- ASUS RT-AC66R (Store by Best Buy)
- ASUS RT-AC66W (White)
- Asus Wireless AC networking solutions
- Asus Routers with DD-WRT firmware support
- AsusWRT Support List
- Devices ASUS Routers