The Rockchip RK3066 is a dual-core Cortex-A9 processor. The official support for this chip stopped years ago.
Updating an RK3188/PX3 (commonly referred to as ) Android head unit is a technical process typically used to upgrade "Tesla-style" vertical car stereos from older versions like Android 4.4 (KitKat) to 7.1 (Nougat). Core Preparation Rkpx3 Android Update
The original base version for most RKPX3 units. The Rockchip RK3066 is a dual-core Cortex-A9 processor