I am using an unofficial build of LineageOS 14.1 on my 6 year old tablet (Mi PAD 1 'mocha'). After using it for over a month, the ROM is amazingly stable. The earlier MiUi which the tablet shipped with (7.5.2 Android KitKat) had problems with memory management. For some reason, the 2GB RAM was partitioned into two parts, one for the OS and the other for the running apps. But LineageOS does not have this problem, and…
It is still possible to get OTA Updates for the Xperia Z2 Tablet (Snapdragon 800) using the AICP Rom too. I'm really glad that I bought this device.. Link: https://forum.xda-developers.com/t/rom-official-aicp-15-0-q1...
...for as long as the maintainer continues to support the device. And maintainers are all volunteers.