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You can't boot a Pi Zero from USB. It always boots from SD Card. The Pi Zero doesn't have Wifi If you want to boot from SD Card I suggest you do a fresh installation of Raspberry Pi OS. It includes ALL the firmware required. Use a new SD Card if you have data you want to keep.


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Check the contents of the file /etc/wpa_supplicant/wpa_supplicant.conf. Your question implies the problem began after connecting the RPi to an external display? Is this RPi Desktop - or Lite? Have you made any changes to your network configuration - or to /etc/dhcpcd.conf?


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You have something different in the configuration files which prevents dhcpcd from starting wpa_supplicant. This is how the service status looks on my system: pi@raspberrypi:~ $ systemctl status dhcpcd ● dhcpcd.service - dhcpcd on all interfaces Loaded: loaded (/lib/systemd/system/dhcpcd.service; enabled; vendor preset: enabled) Active: active (running)...


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Try running sudo apt update; sudo apt dist-upgrade -y; sudo reboot there's a brand new update to the WiFi firmware packages to resolve this failure.


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It could be that DFS/TPC channels were disabled because they used to cause issues such as this one. If you weren't affected by these problems, try getting WiFi chip firmware from an older Pi OS image. The files you need are located in /lib/firmware/brcm/, on my Pi 4 the brcmfmac43455-sdio.* files are used. Changing the country might also help, but this may ...


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You can enable the Pi's serial input via raspi-config and use the radio transceivers as a uart-radio-uart bridge. If you use different channels for up- and down-link (so that the channels do not interfere), everything would be exactly like if you controlled the Pi via its serial command line. The software wouldn't even care about how data is transmitted ...


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My thanks to KLRicks over at the Raspberry Pi forum, who provided the answer: Edit or remove /etc/wpa_supplicant/wpa_supplicant.conf You will be connected to WIFI until next reboot.


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From what I know, update_config=1 sort of ignore the network={... contents in the /etc/wpa_supplicant/wpa_supplicant.conf file and retrieve the information from the /etc/network/interfaces file in terms of Wi-Fi module. To answer your question, update_config=1 won't cause any hang. But, deleting the 'wpa_supplicant.conf' file might. It is an essential file ...


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I've spent hours on trying to get this issue resolved but ended up no luck. I even tried creating a new 'wpa_supplicant.conf' file on the boot drive of the SD card on my Windows PC but still, my Pi could not connect to any of the Wi-Fi networks. So, I reformatted and reinstalled Raspbian OS on it. My plan was to connect to a new Wi-Fi network by rewriting ...


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It is far from clear what you are trying to do, however if your Question is how to restore wireless networking after corrupting your wpa_supplicant file all you have to do is put a correctly formatted wpa_supplicant file in the boot partition and reboot. Of course you could just restore from your backup.


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Had the same problem... apparently you were using netfilter and after the upgrade the iptables command is pointing to the new nftables (https://askubuntu.com/questions/1295021/warning-iptables-legacy-tables-present). Use this to change to netfilter version: update-alternatives --set iptables /usr/sbin/iptables-legacy


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