Never had a reboot or disconnect on any of the firmware. Anytime I flash a new firmware, especially when a firmware has a different wireless driver, I always reset the router to factory defaults after I flash it. And then I reconfigure it manually from scratch. And then I remove all the old wireless profiles on all my wireless devices....then reconnect.
What troubleshooting steps have you taken so far?
I see you have an N66U (I used to own one before my AC66U).
Thanks, yes I already reset the router to facotry defaults yesterday after updating to the latest (beta) firmware.
I downgraded to the version one before it and the issue persisted.
If it weren't for vulnerability issues they fixed
(will see if either of the two vulnerability issues they addressed applies to my specific usage *, otherwise I can keep my older version (or another older version) since I am not using the USB features (at least not yet).
I am going to 'downgrade' one firmware version at a time until I find a stable one, again.
I will work on it again when I get home by installing the 3rd most recent firmware.
* I have a 2 router setup - I am using my AC66U as a 'secondary' router for wireless only. I have DHCP turned off since, without modifications etc., I am required to use my ISP's modem/router combo as a 'primary router' in order to get TV guide listings, VOD etc.).
In all the time I used xxxxxx354 it was rock solid for wifi.
I restarted everything today (cable/modem router, AC66U and PC that primary router is hooked up to) after downgrading to the earlier January firmware FW_RT_AC66U_30043742050.
Unfortunately I lost internet via wifi (5GHz) again relatively quickly.
I surmise one of the new settings is causing the disconnects or conflicting with something else.
I am open to any suggestions as to which modified or new option(s) that was (were) introduced since FW_RT_AC66U_3004354 could be causing the disconnects, so I can experiment.
Ideally I am simply looking for a plug and play solution though, which 354 and earlier firmware revisions certainly were.
I have not changed my adapter (USB-AC53) or computers or OS etc.
No new hardware either.
Everything was fine for months. The disconnects started right after upgrading the firmware yesterday...
I'll post updates.
Edit - Looks like the vulnerability they addressed in January is httpd, which may be the web server functionality?
I found disconnect complaints by several users on the asus vip forum. One poster said the wifi problems started in December.
Details on the vulnerability they addressed in January:http://infosec42.blogspot.com/2014/01/exploit-asus-rt-n56u-remote-root-shell.html
Is this not an issue for me if I never invoke the installer for the additional apps?
The previous firmware version (before the two January versions) is 3.0.0.4.374.979.
I may try that one. I believe that may be the firmware we installed on the AC66U that is in my fiancee's place.