Did the update, and am happy to report NO degrading of an expected near 100% reception experience. Had a 436 and an 800, side-by-side. The two radios are milliseconds out of sequence with each other, rendering the voice quality slightly degraded but very recognizable (sort of a cartoon quality, lol). The two offerings were so close together that I was never able to determine which radio was "ahead" or "behind". Listening for about ten minutes straight, the two radios never once had an instance when a single radio offered an undistorted lone voice. Quite remarkable, actually, like two twin Clydesdales in perfect form. Both were monitoring a single site with only three TGs (Phoenix PD), of the notorious RWC System in Maricopa Co., AZ. Listening to the two radios separately, I think that I prefer the "sound" of the 436. However, the difference is so subtle, that I can not explain my preference.