[brk]

What specific functionality was this mandatory firmware update meant to address? I do not see that in the article, or your response.

A mandatory update implies a critical fix, it would be helpful to understand what warranted this update in the first place, and how that might relate to SQ, SPL, etc.

[jespertt]

A while ago, we realised we are seeing some failed tweeters in Gen3. The issue occurs when a. playing with the battery and the power on the battery is too low, or b. playing with only the charger on high volume. In those cases, there is a possibility that for a couple of seconds, a high-pitched sound comes out of the speaker and the speaker will shut down afterwards, resulting in damaging the tweeter. For this very issue: We have changed the failure mode in a way that it will not damage the tweeter during that shut down. We also made a slight change in the signal processing for the tweeter which further protect the driver from these sudden peaks.