no wifi after FritzOS update and power breakdown

I am running out of ideas, so I'm writing this posting to get some clues.

My Laptop is nearly 7 years old and is running freeBSD 13.1. Last system update is back several months, because building and updating the system does cost a week.... New hardware was planned for this autumn...

The Laptop - Lenovo Thinkpad E470 - is running with a USB TP-Link TL-WN725N WiFi Adapter, because the internal chip isn't supported. I had no problem with WiFi for the last several years.
About two or three weeks back my Fritz!Box got an update. The Laptop still was connected. A few days back we had a power breakdown for several hours, which caused the Fritz!Box to be offline and the battery supply of the Laptop to drop to zero and shut the Laptop of. Now, since this restart I haven't been able to reconnect to the router / wlan.

I played around with the options in wpa_supplicant.conf and rc.conf. What I now get is, that i see my wlan-network in rare cases, but I am not able to see it in regular terms and I am not able to connect to it. The signal is strong, other hardware has no problem to connect to it, despite of the Brother printer, which has connection problem too.

My current configuration looks as follows:
rc.conf
Code:
hostname="freebsd.tp"
wlans_rtwn0="wlan0"
ifconfig_wlan0="WPA DHCP"
wlan_ccmp_load="YES"
create_args_wlan0="country DE regdomain ETSI"

wpa_supplicant.conf:
Code:
ctrl_interface=/var/run/wpa_supplicant
eapol_version=2
ap_scan=1
fast_reauth=1

network={
ssid="myPersonalSsid"
psk="myVerySecretPassword"
scan_ssid=1
priority=5
}

doing a
Code:
service netif restart
gives me (relevant information)
Code:
ssid "" channel 12 (2467 MHz 11g)
status: no carrier

Code:
ifconfig wlan0 scan
gives no results in most cases, but about 5% of the answers I see my own network or the one of my neighbour, which is very weak in my house.

Code:
bsdconfig netdev
finds no DHCP server on wlan0 and finishes with
Code:
ifconfig: : bad value

I played around with wpa_supplicant.conf and rc.conf, but to no result up to now. I really wonder, what happened with the Fritz!Box update and the power breakdown, since the wifi really worked well all the time.

Anyone any clue, what I can test to bring wifi back up?

Ah, the driver is the correct one, as it worked well for years. netstat -rn also shows no wlan0....

Thanks in advance
Jochen
 
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