Android 5.1 handles the typical 1GB or 2GB of RAM found in RK3188 devices much more efficiently than KitKat (4.4).
The combination of Linux kernel 3.0.36+ (with high memory tuning) and Android 5.1's ART runtime unlocks the true Cortex-A9 potential. It feels like replacing a mechanical hard drive with a SATA SSD.
: Older RockChip firmware had vulnerabilities allowing unauthorized data reading in recovery mode; updated firmwares (usually late 2015/2016 releases) addressed some of these security flaws. Key Considerations Before Flashing
can breathe new life into this quad-core workhorse, making it a capable dedicated media terminal or retro gaming station. The Story: Resurrection of the MK809IV
I notice you’ve asked me to based on the keywords: rk3188 + android + 51 + firmware + better
Android 4.4 used Dalvik (JIT compilation). Android 5.1 introduced ART (Ahead-Of-Time compilation). On the RK3188’s 28nm process, ART results in:
