The Rockchip RK3188 is a quad-core Cortex‑A9 SoC that powered a wave of low-cost Android tablets and mini‑PCs around 2013–2015. By the time Android 5.x (Lollipop) arrived, community builders and some vendors had pushed Lollipop builds to RK3188 devices—usually as experimental or custom firmware—so Android 5.1 on RK3188 is possible, but comes with practical tradeoffs.

For those determined to keep legacy hardware alive, the is a thriving testament to community dedication. Just remember: backup your stock firmware, triple-check your Wi-Fi chip, and never flash a kernel from a different device family.

Here is a breakdown of the available content, file types, and where you can likely find a working download.

There are several benefits to using the RK3188 Android 5.1 firmware on your device: