[19.07.2] EA6350v3 - WIFI 5G not working anymore

Hi
Today I tried to change the 5ghz channel on my router, wifi 5g stopped working after that.
I tried to remove and recreate a wireless network on it but nothing changed.

Sat Mar 21 15:24:46 2020 daemon.notice netifd: radio1 (14894): command failed: Not supported (-95)
Sat Mar 21 15:24:46 2020 user.notice mac80211: Failed command: iw phy phy1 set distance 12
Sat Mar 21 15:24:46 2020 daemon.err hostapd: Configuration file: /var/run/hostapd-phy1.conf
Sat Mar 21 15:24:48 2020 kern.warn kernel: [16260.781977] ath10k_ahb a800000.wifi: 10.4 wmi init: vdevs: 16  peers: 48  tid: 96
Sat Mar 21 15:24:48 2020 kern.warn kernel: [16260.782023] ath10k_ahb a800000.wifi: msdu-desc: 2500  skid: 32
Sat Mar 21 15:24:48 2020 kern.info kernel: [16260.829465] ath10k_ahb a800000.wifi: wmi print 'P 48/48 V 16 K 144 PH 176 T 186  msdu-desc: 2500  sw-crypt: 0 ct-sta: 0'
Sat Mar 21 15:24:48 2020 kern.info kernel: [16260.832497] ath10k_ahb a800000.wifi: wmi print 'free: 56528 iram: 23400 sram: 32520'
Sat Mar 21 15:24:48 2020 kern.warn kernel: [16261.131487] ath10k_ahb a800000.wifi: Firmware lacks feature flag indicating a retry limit of > 2 is OK, requested limit: 4
Sat Mar 21 15:24:48 2020 kern.info kernel: [16261.133669] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
Sat Mar 21 15:24:48 2020 daemon.notice hostapd: wlan1: INTERFACE-ENABLED
Sat Mar 21 15:24:48 2020 kern.warn kernel: [16261.144958] ath10k_ahb a800000.wifi: peer-unmap-event: unknown peer id 0
Sat Mar 21 15:24:48 2020 daemon.notice hostapd: wlan1: INTERFACE-DISABLED
Sat Mar 21 15:24:48 2020 daemon.err hostapd: nl80211: Could not configure driver mode
Sat Mar 21 15:24:48 2020 daemon.notice hostapd: nl80211: deinit ifname=wlan1 disabled_11b_rates=0
Sat Mar 21 15:24:48 2020 daemon.err hostapd: nl80211 driver initialization failed.
Sat Mar 21 15:24:48 2020 daemon.notice hostapd: wlan1: interface state UNINITIALIZED->DISABLED
Sat Mar 21 15:24:48 2020 daemon.notice hostapd: wlan1: AP-DISABLED
Sat Mar 21 15:24:48 2020 daemon.notice hostapd: wlan1: CTRL-EVENT-TERMINATING
Sat Mar 21 15:24:48 2020 daemon.err hostapd: hostapd_free_hapd_data: Interface wlan1 wasn't started
Sat Mar 21 15:24:48 2020 daemon.notice netifd: radio1 (14894): cat: can't open '/var/run/wifi-phy1.pid': No such file or directory
Sat Mar 21 15:24:48 2020 daemon.notice netifd: radio1 (14894): WARNING (wireless_add_process): executable path /usr/sbin/wpad does not match process  path (/proc/exe)
Sat Mar 21 15:24:48 2020 daemon.notice netifd: radio1 (14894): Command failed: Invalid argument
Sat Mar 21 15:24:48 2020 daemon.notice netifd: radio1 (14894): Device setup failed: HOSTAPD_START_FAILED

I am getting the same problem have you been able to activate it.

Does it work again with the old channel?

I rebooted the router, created a new wifi network with what I think was default settings, rebooted again and it worked. I think the issue happens when you set a custom channel (other than 36 in my case) OR when I set a country (fr in my case) instead of "driver
default".