Thanks, 6Channel and scottm18, for your responses. You're right about the plethora of confusing, and sometimes contradictory information on the topic on the various V-phone & music app threads. I've seen quite a bit more response to the caution of not upgrading beyond Android 9 (or 10) - but precious little about going beyond that, and what Android 12 does to the sound signature, capabilities, etc of the G8x. For all I know, maybe it FIXED some things that A11 mucked up - but I haven't really seen anything noted about that - just, "don't upgrade beyond Android 10" warnings.
One of the reasons I picked up that particular phone was to give me a "Meridian-tuned" comparative to the V30's B&O tuning, so that I could make my own subjective decision. That said, from what I'm reading in your responses, the OS upgrade beyond Android 9 or 10 not only loses certain performance capabilities (e.g. - MQA, DSD), but also essentially wipes out the Meridian "tuning" of the DAC? I thought that's something that was relatively "baked in". (And yes, I'm NOT really all that concerned about not having MQA or DSD capabilities, at this point, so that's not a big deal.)
I understand that I can EQ the sound to my preference through various apps, but I listen to a pretty eclectic mix of music, and am not really looking to create different EQ signatures for classical, jazz, acoustic, fusion, progressive rock, etc. I'd frankly prefer to at least start out by hearing what a real "tuning house" (Meridian) thought the sound signature should sound like. That said - you're right, I do have concerns about bricking the phone right out of the gate by trying to roll back to Android 9 or 10.
This may or may not be the most appropriate thread to ask (and if not, please feel free to let me know which threads WOULD be) - but it would be great to hear from anyone with a G8x who can provide any insight into the impact of each upgrade beyond Android 9 (and up to Android 12) does to the SOUND SIGNATURE of the phone. Again - I don't have a comparative point of reference, since I just got the phone and haven't even listened to it yet. I'd just like to know, before I invest time in setting it up, if it's sound quality running on Android 12 is up to par with its potential, or whether the updates have degraded it - in which case I may still consider attempting a roll-back.
I suppose my other option is to pick up a cheap G8x in less pristine condition, but with the older OS (would A9 or A10 be preferred?), and at low cost, which would allow me to do my own direct comparison. Yeesh - I thought I was at the point in my life where I was past the point of going down these rabbit holes...
Thanks again in advance for any insights and recommendations (including if I should be posting this elsewhere)