Update:
1. I've got my Rockville 8" powered sub adjusted and dialed in for bass gain, bass boost, subsonic filter, etc. and it's sounding very nice. My tone control settings are now at:
Bass 0
Mid +1
Treble +2
System sounds at least as good as it did last September before the horrid OTA update that wreaked havoc with the stereo.
2. The voice search for playing songs is working about 75% of the time. Not sure why it's not better but maybe the system needs to learn my voice.
3. It sounds like the system has a different voice than before the software fix of Friday. It's a female voice, not as sultry as my previous female voice, with just a hint of robotic.
4. I tried the navigation using Android Auto and I'm happy to report the volume control can be set at a lower level and the system will remember it. No more blaring navigation voice shouting directions at me. However, the actual voice for turn-by-turn directions seems to be the Uconnect female voice and not the male voice I have set for Google Assistant on my phone. I seem to remember before Friday's software patch the navigation voice was the male voice I have set for Google Assistant. I will check into this further. (What? Do YOU want a woman telling you where to go?! LOL.)
5. I made a call to my phone when using bluetooth and also when using Android Auto and I can happily report the shouting voice is gone here, too.
So, it appears I've been made whole. Eight months later.
I would like to thank
@RamCares for reaching out to me in the past week and elevating my case with UConnect and FCA.
@RamCares must have seen my tweets and/or read my posts in this thread and became aware my dealer told me the software patch in TSB 08-016-19 REV C did not apply to my vehicle. RamCares asked me via Twitter direct message for my VIN#, contacted FCA, learned that my truck was indeed covered, and urged me to make an appointment with my dealer to get it applied. Thank you
@RamCares for reaching out to me. Also, I'd like to thank Brittny at UConnectCares for phoning me and discussing my case with me. These two made it happen for me.