I poked around in the boot partition. The kernel is ancient!
Linux version 3.18.71-perf-gaf770dc
The oldest supported kernel is 5.10 and that loses support in December. That's wild they are using a 3.X kernel
>gaf770dc
missing a d(gaf)
sorry, had to get that out!
3.18.71-perf-gaf770dc is a Qualcomm Android vendor kernel from roughly late 2017. The 3.18 branch went fully EOL in 2019, so nothing after that was ever backported to it.