⚙️Custom-UF2-File-Building-Guide A guide to build custom .uf2 files. 📦Requiremets Linux Operating System Your Board for testing firmware files. 🗃️UF2 (USB Flashing Format) Files It is type of file developed by Microsoft. It is used for flashing microcontrollers by making them appear as a removable USB drive to a computer. 🔗Links MicroPython from here. CircuitPython from here.