To successfully flash your device, you need to download both the flashing tool package and the official Rockchip USB drivers. 1. Download the Tool Package
Only use firmware provided by the manufacturer or a trusted, verified developer community for your exact device variant. Rk Android Tool 2.71 Download
The "Erase Flash" button is a lifesaver for bricked devices that won't accept a standard firmware flash. To successfully flash your device, you need to
Try a different USB port, preferably a USB 2.0 port rather than USB 3.0. Conclusion To successfully flash your device