Bug#958566: b43-fwcutter: Wifi Broadcom at BCM4311 very slow after installing new firmware-b43-installer_019-5_all.deb

[Gert van de Kraats <vd.Kraats@hccnet.nl>]

Package: b43-fwcutter
Version: 1:019-5
Severity: grave
Justification: renders package unusable

Dear Maintainer,

After the recent upgrade to package firmware-b43-installer_019-5_all wifi
connection was extremely slow causing e.g. timeouts at Firefox.
This package contains firmware version 6.30.163.46
To solve the problem I had to reinstall firmware-b43-installer_019-4_all 
with
firmware version 5.100.138.
Probably the new version is not compatible network controller BCM4311.

0c:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4311
802.11a/b/g [14e4:4312] (rev 01)
        Subsystem: Dell Wireless 1490 Dual Band WLAN Mini-Card [1028:0007]
        Flags: bus master, fast devsel, latency 0, IRQ 17
        Memory at dfdfc000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: [40] Power Management version 2
        Capabilities: [58] MSI: Enable- Count=1/1 Maskable- 64bit-
        Capabilities: [d0] Express Legacy Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [13c] Virtual Channel
        Kernel driver in use: b43-pci-bridge
        Kernel modules: ssb



-- System Information:
Debian Release: bullseye/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 5.5.0-1-686-pae (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), 
LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages b43-fwcutter depends on:
ii  debconf [debconf-2.0]  1.5.73
ii  libc6                  2.30-4

b43-fwcutter recommends no packages.

b43-fwcutter suggests no packages.

-- debconf information:
  b43-fwcutter/install-unconditional: true