NOX is the best Android Emulator you can find for Windows! It offers great compatibility, excellent performance and the best stability out there. And did I mention that is also free? Yeah, NOX Emulator is 100% free.
There is also a MacOS version too, click here to download NOX for MacOS.
The Rockchip SD Firmware Tool is a tool that allows you to upgrade your Rockchip device / TV Box through the SD Card. You can easily create a bootable version of the firmware and then by simply restarting the device it will boot from your SD Card and the upgrade session will start. Inside the zip file, you will find the SD_Firmware_Tool.exe and a Word Document with detailed instructions on how to use the Rockchip SD Firmware Tool correctly.
Attention: Using the Rockchip SD Firmware Tool can also damage your device if not used correctly. Proceed with caution.