I have installed Fedora and I have problems trying to install the Broadcom BCM43412 Driver for wireless connections.
First, you need to enable
rpmfusion repo on your system ( free + non free repo) , it depends on your fedora version following the steps descried here
To get the wifi working , you need to install the
broadcom-wl package , then enable the
wl module. Also you should disable the secure boot from your bios settings because the
wl module isn't signed.
To install the driver run the following command:
yum install broadcom-wl modprobe wl
Check kernel-devel matches the current kernel
dnf install "kernel-devel-uname-r == $(uname -r)"
Then rebuild kernel modules
Enable wireless module