Yeah, I’ve been telling people around that the WiFi FW update is dangerous, especially is your wifi and bluetooth is working fine with your old FW. Problem seem to be that the RPi package maintainers doesn’t bother to actually write the versions or changelogs for the FW. This is extremely annoying and (eh-hm…) plain stupid.

Normally apt show packagename would show you more details and versions etc.
For the RPi FW, they tell you fcuk about anything you didn’t already know, while keeping an old date in the version string.