Downgrading the Verizon P3a to Android 11? >_<

To clarify, I didn't buy the phone piecemeal; it came with a Pixel 6a, which included this particular phone as part of the deal. I did not know it would be a VZW Pixel, but knowing it's a thing, I ran the IMEI#, and it said: "-VZW" when I got it. Fastboot confirms this too.

That's a red flag I walk away from if there's not another device (like a bootloader unlockable 6a without a SIM lock and can never be locked) to make dealing with it viable. Verizon+Pixel is a deal breaker for me, and a borderline curse word.

I want to use a Verizon P3a 64GB with devices that are pretty picky about the Android build, seemingly fail on newer devices, and are just picky in general. I've had trouble with 2 LG Phoenix devices (AT&T PREPAID unlocked, so they got a few SW updates and run Android 10; rejected due to connection issues and use of MicroUSB). My old Samsung A42 5G (U1, Android 13) also had issues, as well as my Pixel 7 (Google Unlocked, Android 14). None of these worked.

Even my Pixel 6a and Pixel 8 (both run Android 14; the P8 is new to me, but it's a Google unlocked phone without the cursed Verizon bootloader) refuse to connect to this thing. Gah, I think Android 12+ refuses to connect to this device. I give up trying modern phones -_-... I even believe BOTH my iPhone 12 and 15 Pro decided to give me grief.

However, I have two super old Android 10 phones that worked from Motorola, where this idea originated. Since I don't use that Verizon P3a for much of anything (since I can't flash newer software on it), it's forever stuck at Android 12.

As such, I want to try and downgrade it back to Android 11 at the absolute latest patch level for the P3a on 11. I know it will be 4+ years back on patches under 11 5/5/22 on 12, but if it can be downgraded, I can always bring it back up compared to my other legacy devices that are permanently stuck without 4+ years of patches )(4/1/21, 2021 G Play; 6/1/21/G7 Play).

Is there any way to downgrade the phone back to 11, or am I screwed because of the Verizon bootloader? If I can do it, what version do I need?

I may be screwed, given it's a Verizon phone...