Current version delivered of texane STLink is 1.3.0. It does not support Nucleo L496ZG(-P). Latest version 1.5.0 add this support: https://github.com/texane/stlink/releases/tag/1.5.0 Anyway, it does not support H7. One solution is to replace Texane STLink by STM32CubeProgrammer which is now multi-OS: http://www.st.com/en/development-tools/stm32cubeprog.html _Multi-OS support: Windows® , Linux® , macOS®_