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I used to have another version of Ubuntu on my old MacBook Pro and one day Wi-Fi disappeared with the "No Wi-Fi Adapter Found" in the Settings. I tried to follow various options found on different forums and it didn't help. I installed Ubuntu 22.04, but the problem is the same.

I enclose results for the commands: lshw -c network(photo 1), lspci (photo 2), sudo dmesg |grep b43, rfkill list all, grep b43 /etc/modprobe.d/*(photo 3), lspci -vvnn | grep -A 9 Network(photo 4).

enter image description here

I downloaded a file from here (http://www.lwfinger.com/b43-firmware/?C=D;O=A), but I don't know where I should locate it.

upd. after sudo dmesg | grep b43 - the following answer

Yuliia
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1 Answers1

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Download this package to your desktop: http://www.lwfinger.com/b43-firmware/b43fw_508.tar.gz

Right-click it and select ‘Extract Here.’ Now, from the terminal:

cd /usr/lib/firmware
sudo mkdir b43
sudo cp ~/Desktop/b43fw_508/b43/*  b43
sudo modprobe -r b43 && sudo modprobe b43

Once your internet is restored, let’s install the latest versions of the firmware:

sudo apt update
sudo apt install –reinstall firmware-b43-installer
chili555
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