It looks like you're looking for an improved or "better" firmware for a device running on an chipset with Android 4.4.2 (KitKat) or higher (since "51" may refer to Android 5.1 – Lollipop).
Here is a drafted guide on how to find and flash the "better" firmware for your RK3188 device.
To understand why Android 5.1 is better, we must first diagnose the sickness of the original firmware. rk3188+android+51+firmware+better
: Most custom firmwares (like those on Slatedroid ) include a kernel that boosts the CPU from 1.4GHz to 1.6GHz. Just ensure your device has a heatsink—these chips get hot!
Is an RK3188 box a flagship killer? No. But for a secondary TV in the kitchen, a car headunit, or a retro-game emulator (PS1/N64), a breathes shocking life into old silicon. It looks like you're looking for an improved
Yes, but not in the way you think. If you’re still clinging to an old RK3188 TV box, tablet, or single-board computer, stock Android 4.4 is a security nightmare, and Android 5.1 is the "Windows XP" of this chipset. But "better" doesn't just mean newer. It means leaner, stripped, and optimized. Let’s talk about resurrecting the Quad-Core Cortex-A9 dinosaur.
To help you find the file for your hardware, could you tell me: : Most custom firmwares (like those on Slatedroid
When searching for the best build, look for "Community Optimized" ROMs. Developers like or Oman (often found on FreakTab forums) created specialized Android 5.1 builds that: De-bloat the system (remove useless pre-installed apps). Enable Root Access by default.