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  1. vaboro

    RT AC86U Spontaneously Started Crashing on 386.2_4

    You understood it absolutely correct. However, everyone's configuration is unique and many things may go wrong. So, it's usually a trial and error path. Unfortunately, there is no definitive answer to this question. You should try and see what you get for your configuration. This is why I...
  2. vaboro

    RT AC86U Spontaneously Started Crashing on 386.2_4

    Maybe because the id of the message to which you wanted to post a reply has changed after I merged it with another message since your further messages are visible.
  3. vaboro

    RT AC86U Spontaneously Started Crashing on 386.2_4

    Sorry, I thought I am typing too many messages and decided to merge two of them.
  4. vaboro

    RT AC86U Spontaneously Started Crashing on 386.2_4

    IMHO couple of seconds is enough. When I connect an UART interface card to the routher that has been disconnected from all cables and dongles as well as from power, and when I push the power button, the LED's on the UART interface card blink and I get couple of lines of code on the console...
  5. vaboro

    RT AC86U Spontaneously Started Crashing on 386.2_4

    Thank you for describing your status in so much detail. This I think is essential. It's the reason of your router's rebooting from time to time. The kernel tries to execute code which signature has changed and «panics» rebooting your router. The most severe case would be a boot loop. And this...
  6. vaboro

    RT AC86U Spontaneously Started Crashing on 386.2_4

    Here’s your problem: May 5 06:05:08 crashlog: <0>Kernel panic - not syncing: Fatal exception May 5 06:05:08 crashlog: <2>CPU0: stopping May 5 06:05:08 crashlog: <4>CPU: 0 PID: 7952 Comm: pidof Tainted: P D O 4.1.27 #2 May 5 06:05:08 crashlog: <4>Hardware name: Broadcom-v8A (DT)...
  7. vaboro

    RT-AC88U random crashes

    Cheer up, your router is fully functional, no reason to be at a loss :) Tweaking config settings a lot may sometimes result in weird behavior up to kernel panics. I may recommend nvram reset and setting up the router manually from ground up again. Take a look at this post...
  8. vaboro

    RT-AC88U random crashes

    Here’s the problem: May 6 08:09:57 kernel: DUMP CONSOLE: TRAP 4(2acd90): pc 11144, lr 206743, sp 2acde8, cpsr 68000193, spsr 68000033 May 6 08:09:57 kernel: DUMP CONSOLE: 045122.481 dfsr 5, dfar 5e000004 May 6 08:09:57 kernel: DUMP CONSOLE: 045122.481 r0 5e00000c, r1 5e000004, r2 2007f8...
  9. vaboro

    repair ac86u with delsolder flashing

    Then it's very unlikely that your router has a bad solder joint. Bad solder joints develop over the years of operating at high/extreme internal chip temperatures, low ambient temperatures and turning the device on and off often. But even if bad solder joints develop (happens from time to time...
  10. vaboro

    repair ac86u with delsolder flashing

    For how long have you been using the device? What are the ambient operating conditions and internal chip temperatures? Do you often power if off and then on again or does it usually stay always on?
  11. vaboro

    repair ac86u with delsolder flashing

    You may experience a boot loop due to kernel panic after a firmware update or a configuration change. Are you connected to the router's UART interface?
  12. vaboro

    Accidentally flashed RT-AX86U firmware on RT-AC86U and now unable to flash back the correct firmware

    The computer's LAN interface should be reconfigured correctly in order for http to work on 192.168.1.1; for tftp to work you have to configure tftp server on the computer in addition to correctly reconfiguring the LAN interface. Your router seems to be fully recoverable and the UART card will...
  13. vaboro

    Accidentally flashed RT-AX86U firmware on RT-AC86U and now unable to flash back the correct firmware

    In fact, it most probably does but you just can't see it unless you're connected to console: You have to correctly configure the LAN card and tftp server on your PC or Mac and the router will be flashed automatically.
  14. vaboro

    Accidentally flashed RT-AX86U firmware on RT-AC86U and now unable to flash back the correct firmware

    Have you tried holding WPS button and powering the device on? AC86U should go into interactive CFE mode and the http server should become available on 192.168.1.1 provided you configured the LAN card correctly on your PC or Mac. In fact AC86U will be bricked when you mess up the boot loader in...
  15. vaboro

    GT-AC2900 - 160MHz not available if 2.4GHz set to ch 11?

    But today there are AX devices that are backward compatible with AC including AC Wave 2. I'm just trying to say that the use of GT's 160MHz is not limited to AC devices only.
  16. vaboro

    GT-AC2900 - 160MHz not available if 2.4GHz set to ch 11?

    What about backward compatibility? Aren't AC devices able to use a/n mode?
  17. vaboro

    GT-AC2900 - 160MHz not available if 2.4GHz set to ch 11?

    It's not if you're not concerned about power savings and battery lives of your mobile devices :)
  18. vaboro

    GT-AC2900 - 160MHz not available if 2.4GHz set to ch 11?

    Any AX device is compatible with this.
  19. vaboro

    RT-AC86U random crash

    This method helped me recover from kernel panic on stock 384 and 386 as well as on merlin 384 and 386.
  20. vaboro

    RT-AC86U random crash

    Are you on stock or merlin firmware? I suppose you're running stock. Am I right?
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