Debugging of embedded systems is one of the most important parts of firmware development. Real-time trace debugging by means of special software and hardware provides the best way to debug the firmware on real equipment. New challenges in higher education, caused by COVID-19 pandemic, require new approaches in courses, oriented on embedded system development. The paper is devoted to experience of STM32CubeMonitor implementation for remote debugging of STM32-based MCU boards during the quarantine and distance learning process, caused by COVID-19 pandemic.