package firmware-b43-installer 1:019-4 failed to install/upgrade: installed firmware-b43-installer package post-installation script subprocess returned error exit status 1

[Sanjoy Choudhury]

my wifi was turing off after some time, ubuntu network settings said no wifi harware found, thenn i installed firmware-b43-installer and now it does not show any wifi netwrok. i am using LAN for now.

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: firmware-b43-installer 1:019-4
ProcVersionSignature: Ubuntu 5.4.0-52.57-generic 5.4.65
Uname: Linux 5.4.0-52-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.11-0ubuntu27.10
AptOrdering:
 b43-fwcutter:amd64: Install
 firmware-b43-installer:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
CasperMD5CheckResult: skip
Date: Wed Nov 4 13:29:02 2020
ErrorMessage: installed firmware-b43-installer package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2020-11-04 (0 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
PackageArchitecture: all
Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.1
SourcePackage: b43-fwcutter
Title: package firmware-b43-installer 1:019-4 failed to install/upgrade: installed firmware-b43-installer package post-installation script subprocess returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Dagmar P (dagmar-petermann)]

It seems to be the same bug.
I got WiFi again by blocking/blacklist all WLan-drivers (the b43 packages ...) except STA-packages.
But with every update process, daily, it tries to update/install the b43-firmware. That takes long, and gives back an error report every time.