If you need to unbrick a dead device, upgrade your operating system, or install a custom ROM, this tool is often the industry standard. Key Features of RK Android Tool V2.7.1
Look at the bottom of the tool's window. It should say or "Found One MASKROM Device" .
You are trying to flash firmware meant for a different Rockchip processor (e.g., flashing RK3399 firmware onto an RK3288 device).
A deep recovery mode used when the device's bootloader is corrupted. Prerequisites for Using the Tool
Before you attempt to flash any files, you must prepare your environment. Skipping these steps usually results in the tool failing to recognize your device.