Attention: Beware that you might need to set a jumper on your USBasp programmer to flash the bootloader (JP3 on most chinese clones). Once the bootloader is installed, you can flash the firmware. Go ...

Open the sketch file in the Arduino IDE and upload it to the Uno, making sure Uno is selected from Tools>Board, and that the correct serial port for the Uno is selected from Tools>Port. After this, ...

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