It sounds like you’re trying to install Android 7.1.2 (NHG47K) on an RK3228-based TV box (often labeled “RK322Xbox” in firmware). Here’s a general guide for that process.
Tools for Installation:
Connect to PC: While the box is unplugged from power, use a toothpick to press and hold the Reset button (hidden inside the AV port). android rk322xbox rk322xbox 712 nhg47k install
If your box is stuck on a boot loop or you are upgrading from , follow these steps: It sounds like you’re trying to install Android 7