I have been working lately on the Atmega2560 microcontroller, as I haven’t been using it for years, so I tried to refresh some info, and I started implementing a toggling LED code like a noob. Everything was going so fine except with the clock, it wasn’t adjusted correctly and it gave me a speedy toggling effect on the LED. When I tried to change the configuration of the lock bits on AVRDUDESS GUI, the MCU stopped working and it couldn’t be detected by AVRDUDESS.