Unlocked/Unbranded GSM 650

I ran the latest update on my wife's phone tonight (she reciently dug hers out of the closet too). Before updating it I noticed that her phone still had the annoying speakerphone hiss. So I updated to the latest/greatest and the problem still persists.

My 650 however, doesnt hiss. Now, I vaguely remember someone posting a fix of some sort way back in '05 or maybe '06. I have been digging around hand havint been able to find it, either here or on my PC (I did however find a bunch of old crap files and downloads that I will never use). I must have downloaded directly to the treo.

Anyway, I would really like to clear this up for my wife so if anyone remembers the fix or who developed it, it would be appreciatd.