An Official Firmware for "LD4" by NAAD http://naad.tokyo/
- Atollic TrueSTUDIO https://www.st.com/en/development-tools/truestudio.html
- STM32CubeMX https://www.st.com/en/development-tools/stm32cubemx.html
- STM32 ST-LINK utility https://www.st.com/en/development-tools/stsw-link004.html
- STM32F407VGT6 https://www.stmcu.jp/stm32/stm32f4/stm32f407417/12239/