ASUS rt66u when connecting / disconnecting wireless devices, the WAN connection is lost

  • ATTENTION! As of November 1, 2020, you are not able to reply to threads 6 months after the thread is opened if there are more than 500 posts in the thread.
    Threads will not be locked, so posts may still be edited by their authors.
    Just start a new thread on the topic to post if you get an error message when trying to reply to a thread.


New Around Here
Hi all! I have an asus rt n66u router. Periodically, a problem arises: when connecting or disconnecting wireless devices, the connection to the Internet is lost and the router creates it again.
Can you please tell me what could be the problem? Firmware for asus-wrt Merlin 380.70


New Around Here
screenshots of logs


  • uNdpA75z[1].jpg
    201.3 KB · Views: 25
  • Blik44so[1].jpg
    230.7 KB · Views: 26


Part of the Furniture
This is >3 years old firmware. I recall wireless drivers issues on RT-N(AC)66U routers. I would run much newer 382 code base Asuswrt on it. The latest release is from 06/2020. Other option is John's Asuswrt-Merlin fork, but it's based on even older code base. Has more recent security updates though.
Last edited:


Part of the Furniture


Senior Member
If I recall, 380.70 will not accept other firmware unless the windows based "rescue utility" is used or the "CFE mini web server" which is built into the router. I am unsure of the steps to access the web server.


Part of the Furniture
You can't downgrade to previous code base in GUI. Upgrading to newer Asuswrt is not a problem. If John's fork is the firmware of choice, then Firmware Restoration Tool is the only way. Same for FreshTomato. By the way, FreshTomato not only runs on this router, but with NAT acceleration support.

Similar threads

Latest threads

Sign Up For SNBForums Daily Digest

Get an update of what's new every day delivered to your mailbox. Sign up here!