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RT-AC56U won't boot into recovery

Discussion in 'Cisco/Linksys Wireless Routers' started by Xplorer4x4, Feb 10, 2017.

  1. Xplorer4x4

    Xplorer4x4 Addicted to LI Member

    Like an idiot I didn't read up how to flash tomato to my new RT-AC56U. I flashed it via the regular web ui. I'm trying to get it into recovery by holding the power button in. Plugging in the power chord. And release power after about 30 seconds. Now I can't get into the web ui. It shows an Asus logo and an error message I don't have in memory as I had to run out the door so I wasn't late for work lol.

    Sent from my LG-D851 using Tapatalk
     
  2. pomidor1

    pomidor1 Serious Server Member

  3. Xplorer4x4

    Xplorer4x4 Addicted to LI Member

    So I should try the trip method?

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  4. Sean B.

    Sean B. LI Guru Member

  5. Xplorer4x4

    Xplorer4x4 Addicted to LI Member

    Thanks! I got it into recovery but still no luck getting a working firmware installed. I used the firmware restoration tool from Asus. It said that flash was unsuccessful. So tried again and succeeded. It said to wait while router reboots. Waited about a min and saw the router power led stay on. At this time I rebooted manually. Still no luck getting into web ui. So tried to flash again. Failed to flash. So tried getting into recovery mode again but now recovery doesn't seem to load. I get the solid power led(not flashing). Where should I go from here?

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  6. Xplorer4x4

    Xplorer4x4 Addicted to LI Member

    Update: made it in to recovery again. Firmware Restoration utility went through all the steps but said "failed to recover the system."

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  7. Sean B.

    Sean B. LI Guru Member

    What firmware are you uploading for recovery?
     
  8. Xplorer4x4

    Xplorer4x4 Addicted to LI Member

    Stock

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  9. Sean B.

    Sean B. LI Guru Member

    You've set a static IP address in the computer you're using correct?
     
  10. Xplorer4x4

    Xplorer4x4 Addicted to LI Member

    Yep, left the gateway and dns empty. Ip is 192.168.1.10 and subnet set to 255.255.255.0

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  11. Sean B.

    Sean B. LI Guru Member

    What's the filename of the firmware file you've using?
     
  12. Xplorer4x4

    Xplorer4x4 Addicted to LI Member

    FW_RT-AC5U_30043803264

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  13. Sean B.

    Sean B. LI Guru Member

    Are you sure the firmware your router was running prior to your attempt to flash it was at or above version # 3.0.0.4.376.xxxx ? If not, you need to use 3.0.0.4.374.583, or 3.0.0.4.376.1665 as the next option if 374 fails. The router must be upgraded to 376 prior to any later versions as 378 and above will not flash over versions 374 and below. This has to do with the CFE of the router which does not get flashed over during normal firmware upgrades ( or when changing to most 3rd party firmware ) .. 378+ is part of Asus tightening security due to regulatory pressure and requires 376 to be in place first.
     
    Last edited: Feb 11, 2017
  14. Xplorer4x4

    Xplorer4x4 Addicted to LI Member

    CORRECTION: RT-AC56U_3.0.0.4_380_3264-g79f6bde.trx
    Thank you sir! Flash was sucesfull! Thanks for the detailed info on the firmwares too!

    Now may I ask if this is the proper method for flashing TomatoUSB on my AC56U? I assume the process is the same on all current gen ASUS routers?
     
  15. Sean B.

    Sean B. LI Guru Member

    First, lets start with exactly what build/version of tomato you are attempting to flash?
     
  16. Xplorer4x4

    Xplorer4x4 Addicted to LI Member

    The name of the trx file is tomato-RT-AC56U-ARM--138-AIO-64K but I forgot the specifics. I was running Toastman builds previously on my Linksys E2000 and it served me well for about a decade but couldnt find a toastman build for the AC56U.
     
  17. Sean B.

    Sean B. LI Guru Member

    Toastman 1.28.9008.8 for 56U from his 4shared download site:

    http://www.4shared.com/file/UlmaYi2rba/tomato-RT-AC56U-90088Toastman-.html

    Flash firmware using the rescue utility/procedure you just used to recover the router. After reboot use a static IP of 192.168.1.x to connect to router as DHCP is not enabled by default. Goto Administration->Configuration and select/run " Thurough NVRAM erase " . After reboot reconnect again and configure router as you want. From that point future firmware updates for Toastmans builds can be done through the GUI.
     
    Xplorer4x4 likes this.
  18. Xplorer4x4

    Xplorer4x4 Addicted to LI Member

    Thanks! So now I got the router in recovery mode again but the firmware restoration program refuses to find my router. :s

    I can confirm I can't ping the router despite a static Ip and the router in rescue mode(power light blinking.

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    Last edited: Feb 12, 2017
  19. Sean B.

    Sean B. LI Guru Member

    Have the firmware file selected and ready in the rescue utility. Soon as the light starts blinking click send.. timing can be hard to hit. If still doesn't work, remove the static IP and try again. Technically rescue mode should hand out a dhcp address.
     
  20. Xplorer4x4

    Xplorer4x4 Addicted to LI Member

    Is there an easier way to boot recovery? It takes me like 1 out of 30 tries to get it to boot recovery!

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  21. Sean B.

    Sean B. LI Guru Member

    Do you mean boot recovery as in getting the LED to blink? All that involves is holding the reset button while powering on. Or are you referring to getting the firmware to upload once in recovery? If so, as mentioned in my last post, the timing on that can be a pain. I've heard a trick to help is run ping in a cmd prompt on the client computer set to continuously ping the router.. then boot it into recovery. As soon as a ping gets a reply click send and upload firmware.
     
  22. Xplorer4x4

    Xplorer4x4 Addicted to LI Member

    I understand it seems so simple. Hold reset while powering on but 29 tries out of the 30 i check the power light and its solid blue/not blinking.

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  23. Xplorer4x4

    Xplorer4x4 Addicted to LI Member

    So I did some more research and found you have to keep holding reset after power on until the light starts flashing. I was releasing it right after power up. So now I can get into recovery every time. Now I guess it's a matter of timing maybe? I have a constant ping to 192.168.1.10 running in cmd. I try clicking upload and booting recovery while the utility is trying to connect. However I noticed my firewall (comodo) is reporting the utility is trying to access 255.255.255.255. So I wonder if that's relevant or not?

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  24. Sean B.

    Sean B. LI Guru Member

    Also, I don't
    The router IP should be 192.168.1.1 not .10 . And click upload in the utility only after ( immediately after ) the router LED is blinking.. the LED blinks to confirm the router has booted into recovery mode.
     
  25. Xplorer4x4

    Xplorer4x4 Addicted to LI Member

    Sorry I meant 1 not 10. My Ip was set to 10. Anyway I finally got the flash to take. I'll edit my post with link to the post I found here with instructions that worked for me. Last question, I believe, how long does it usually take for the router to fully boot up after the recovery flash? My power light has been steady for about 15 min now but can't access the web ui yet.

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  26. Sean B.

    Sean B. LI Guru Member

    What part of the recovery instructions in the manual I linked was incorrect or differed from the procedure you used?

    Step 2 from Asus 56U users manual recovery mode section:

    2. Hold the Reset button at the rear panel and simultaneously
    replug the wireless router into the power source. Release the
    Reset button when the Power LED at the front panel flashes
    slowly
    , which indicates that the wireless router is in the rescue
    mode.

    Average reboot time differs by router, but 15mins is more than enough. Confirm you have a static IP set in the client computer of 192.168.1.x .. X = 2 or higher . Power down the router and disconnect the client computer, then turn the router back on. Give the router a couple minutes to be sure it's fully booted and then reconnect the client computer and attempt accessing http://192.168.1.1
     
  27. Xplorer4x4

    Xplorer4x4 Addicted to LI Member

    The link is not about getting in to recovery mode. It's about getting the router recognized once in recovery. I never read the user manual procedure as i was using the steps outlines on the ASUS website which does not make it clear you must hold reset until recovery starts. Anyway, these are the steps I used to get the router to be recognized.

    I figured 15 min was enough but just verifying. My client up is set to 192.168.1.10. Subnet set to 255.255.255.0 and gateway and dns entries empty. I try accessing 192.168.1.1 but get a grey page saying
    "Settings have been updated. Web page will now refresh.
    Changes have been made to the IP address or port number. You will now be disconnected from RT-AC56U.
    To access the settings of RT-AC56U, reconnect to the wireless network and use the updated IP address and port number"
    As far as I can tell the router is not fully booting, at least not according to the status leds on front. The power light turns on and stays on but after waiting 5-10 min for the rest of the status lights to turn on, they never turn on. From there i decided trying to hold the reset button for about 30 seconds with power on, after the reset I am now able to access the TomatoUSB WebUI!!!

    Thank you so much for your time and patience! It is members like you that make online communities like this thrive.
     
  28. Sean B.

    Sean B. LI Guru Member

    You're very welcome, glad we got it up an running.
     
    Xplorer4x4 likes this.

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