The industry standard, though it comes with a high price tag. Its Hex-Rays decompiler is world-class for turning binary into readable C.
# 3. Lift to IR ir_module = lift_to_llvm(functions)
The first step in decompiling a UF2 is usually converting it back into a standard binary. The official Microsoft UF2 GitHub repository provides a Python script called uf2conv.py .