All FW versions have just become unavailable through XperiFirm :) Well, well...
The issues such as cracks produced by the earpiece are gone afrer you make a short phone call (sometimes you have to start playing music during the call and then hang up).
BTW. It has to be done after each reboot, but at least this temporary solu...
Small Apps panel under the navbar at all times.
Louder phone resulting in cracklings in upper speaker.
now that's the module I've been looking for :)
works perfectly on Xperia Z1 (probably other Xperia devices too), as you may see in the screenshot attached :)
PS. the grey indicators come from GravityBox, just to show you that the stock ones ...
this new feature may be disabled in options of FB Messenger app :)