While maintaining the short, plug the USB cable into your PC. Remove the tweezers after 2 seconds. Step 3: How to Use RKDevTool v2.71 to Flash Firmware
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If you have compiled your own Android/Linux source tree, you will have separate files like parameter.txt , uboot.img , trust.img , and boot.img . Stay on the default tab. While maintaining the short, plug the USB cable into your PC