Asus RT-N66U not working wifi

Hello. After installing the firmware on your router. My WIFI is not working. I have enabled it in the network settings. But the lights on the router do not light up. And the access point does not appear. What could be the problem? Please use simple language, I'm a beginner

Set country code and remove legacy rate checkbox (it is about supporting 11b devices)
Check System/logs tab after what is logged while starting access point.

In upper advanced tab...
Since your device is broadcom based, once you scan wifi or make survey the access point may become unavailable, so you have to reboot device to clear it up.

Oh, I didn't see it. Made it and applied it. Wifi didn't appear

Close this dialog and disable/enable again, then check system logs. It should pop up immediately, iphones or androids cache scans for 5-15s, so you may wait on them...

EDIT: you need to "save and apply" after saving in this dialog, parameters are not instantly applied.
EDIT2: in lower advanced tab set wifi mac address to random, so your further screenshots are safe to post on the net.

Thu Oct 10 10:42:19 2024 daemon.notice hostapd: Set new config for phy phy0:
Thu Oct 10 10:42:19 2024 daemon.notice wpa_supplicant[1260]: Set new config for phy phy0
Thu Oct 10 10:42:20 2024 daemon.notice wpa_supplicant[1260]: Set new config for phy phy0
Thu Oct 10 10:42:20 2024 daemon.notice hostapd: Set new config for phy phy0: /var/run/hostapd-phy0.conf
Thu Oct 10 10:42:20 2024 daemon.notice hostapd: Restart interface for phy phy0
Thu Oct 10 10:42:20 2024 daemon.notice hostapd: Configuration file: data: driver=nl80211 logger_syslog=127 logger_syslog_level=2 logger_stdout=127 logger_stdout_level=2 country_code=RU ieee80211d=1 hw_mode=g supported_rates=60 90 120 180 240 360 480 540 basic_rates=60 120 240 beacon_int=100 chanlist=1 #num_global_macaddr=1 channel=1  interface=phy0-ap0 bssid=10:bf:48:53:d1:60 ctrl_interface=/var/run/hostapd bss_load_update_period=60 chan_util_avg_period=600 disassoc_low_ack=1 skip_inactivity_poll=0 preamble=1 wmm_enabled=1 ignore_broadcast_ssid=0 uapsd_advertisement_enabled=1 utf8_ssid=1 multi_ap=0 auth_algs=1 wpa=0 ssid=OpenWrt qos_map_set=0,0,2,16,1,1,255,255,18,22,24,38,40,40,44,46,48,56 #default_macaddr nas_identifier=10bf4853d160  (phy phy0) --> new PHY
Thu Oct 10 10:42:21 2024 kern.info kernel: [ 5081.577444] b43-phy0: Loading firmware version 666.2 (2011-02-23 01:15:07)
Thu Oct 10 10:42:21 2024 daemon.notice hostapd: phy0-ap0: interface state UNINITIALIZED->COUNTRY_UPDATE
Thu Oct 10 10:42:21 2024 kern.info kernel: [ 5082.023043] IPv6: ADDRCONF(NETDEV_CHANGE): phy0-ap0: link becomes ready
Thu Oct 10 10:42:21 2024 daemon.notice hostapd: phy0-ap0: interface state COUNTRY_UPDATE->ENABLED
Thu Oct 10 10:42:21 2024 daemon.notice hostapd: phy0-ap0: AP-ENABLED
Thu Oct 10 10:42:21 2024 daemon.notice netifd: Wireless device 'radio0' is now up
Thu Oct 10 10:42:22 2024 daemon.info dnsmasq[1]: read /etc/hosts - 12 names
Thu Oct 10 10:42:22 2024 daemon.info dnsmasq[1]: read /tmp/hosts/dhcp.cfg01411c - 4 names
Thu Oct 10 10:42:22 2024 daemon.info dnsmasq[1]: read /tmp/hosts/odhcpd - 2 names
Thu Oct 10 10:42:22 2024 daemon.info dnsmasq-dhcp[1]: read /etc/ethers - 0 addresses
Thu Oct 10 10:42:22 2024 daemon.info dnsmasq-dhcp[1]: DHCPREQUEST(br-lan) 192.168.1.143 00:e0:4c:a2:60:e3
Thu Oct 10 10:42:22 2024 daemon.info dnsmasq-dhcp[1]: DHCPACK(br-lan) 192.168.1.143 00:e0:4c:a2:60:e3 DESKTOP-73GMIP2
Thu Oct 10 10:42:22 2024 daemon.warn odhcpd[1436]: No default route present, overriding ra_lifetime!
Thu Oct 10 10:42:23 2024 daemon.warn odhcpd[1436]: No default route present, overriding ra_lifetime!
Thu Oct 10 10:42:23 2024 daemon.warn odhcpd[1436]: No default route present, overriding ra_lifetime!
Thu Oct 10 10:42:24 2024 daemon.warn odhcpd[1436]: No default route present, overriding ra_lifetime!

Did. Here is the system log

Wifi started, should become visible in wifi scan for clients?

That's the problem. My windows laptop and my android don't see the network
My router is partially supported. Maybe that's the problem?

Here, for some reason, the signal strip is not filled

router's fully supported, problem is the wifi, Broadcom drivers suck.

are you sure your clients are 802.11b/g capable ?

Thu Oct 10 11:05:56 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:05:57 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:05:57 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:05:58 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:05:58 2024 daemon.info hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: authenticated
Thu Oct 10 11:06:05 2024 daemon.info hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: authenticated
Thu Oct 10 11:06:27 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:06:27 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:06:28 2024 daemon.info hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: authenticated
Thu Oct 10 11:06:29 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:06:29 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:06:30 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:06:30 2024 daemon.info hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: authenticated
Thu Oct 10 11:06:33 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:06:34 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:06:34 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:06:35 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:06:35 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:06:35 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:06:36 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:06:36 2024 daemon.notice hostapd: phy0-ap0: STA 08:6a:c5:4d:93:06 IEEE 802.11: did not acknowledge authentication response
Thu Oct 10 11:09:21 2024 daemon.warn odhcpd[1436]: No default route present, overriding ra_lifetime!

Yes, the phone is for sure. This is the latest Samsung s24. The network appeared but now, a connection error. Here are the logs. Thank you so much for your help

But my router has limited OpenWRT support. Could that be the reason?

You need to select network "LAN" in the network in lower part. That provides DHCP address.
Tap 10x samsung intelligent wifi, version new menu will be more informative.

That means you get very limited wifi, the wired part is fine (matching devices of time it was produced)
Note that ASUS is one of major manufacturers providing software updates roughly forever, maybe this is of use to you....

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