Comment 1 for bug 1713276

The file you linked to does not contain any license information, without that we cannot incorporate it into Ubuntu. In searching I can't find specific information about which firmware version has the fix, but even the RPi-Distro github trees do not seem to have been updated. So I haven't been able to find an updated version of the firmware that we will be able to distribute.

Broadcom did push a version of the firmware to upstream linux-firmware at some point, and this is the version we have in Ubuntu's linux-firmware. The best case is for Broadcom to update the firmware there, then we can easily pull it into Ubuntu.