The good news is the firmware update ALMOST completely silences the beeping. Why you can't silence it completely without desoldering the speaker, that I do not know.
Almost? I haven't heard a peep or a beep from any of my S3s since the very first firmware update Bitmain issued (I've got batch 1, batch 4 and batch 5 units). I'm curious to know under what circumstances you are still getting the beeps. I was under the impression that the phenomenon had been successfully identified and corrected. Thanks!