Even if two boxes use the RK3229, they might use different Wi-Fi chips (like RTL8723 or SSV6051). If you flash the wrong firmware, your Wi-Fi won't work. Always check the physical chip inside the box before downloading.
Here is a detailed breakdown of the RK3229 Android 9.0 firmware experience. rk3229 android 90 firmware top
Some of the top brands that offer RK3229 Android 9.0 firmware TV boxes include: Even if two boxes use the RK3229, they
: One of the most popular direct downloads for this chipset. It is designed for devices with 2GB RAM and 16GB storage. rk3229 android 90 firmware top