Not your original source code. You will see something like:
Checking third-party firmware for malicious code or vulnerabilities. uf2 decompiler
def parse_uf2(uf2_path): blocks = [] with open(uf2_path, 'rb') as f: while True: block = f.read(512) if len(block) < 512: break magic0, magic1 = struct.unpack('<II', block[0:8]) if magic0 != UF2_MAGIC_START0 or magic1 != UF2_MAGIC_START1: continue # skip invalid padding flags, addr, psize, block_no, num_blocks, family = struct.unpack('<IIIIII', block[8:32]) magic_end = struct.unpack('<I', block[508:512])[0] if magic_end != UF2_MAGIC_END: continue data = block[32:32+psize] blocks.append( 'addr': addr, 'data': data, 'block_no': block_no, 'num_blocks': num_blocks, 'family': family ) return blocks Not your original source code
If you need to recover work from a UF2 file: A powerful open-source reverse engineering suite
If the UF2 contains a MicroPython or CircuitPython script, it isn't "compiled" in the traditional sense.
A powerful open-source reverse engineering suite. To analyze a UF2 file, you typically convert it to a .bin first and then load it into Ghidra, specifying the processor architecture (e.g., ARM Cortex-M0 for a Raspberry Pi Pico or Adafruit Feather).
| Tool | Type | Best For | |------|------|----------| | | Decompiler | General ARM/Thumb code, free, NSA-developed | | IDA Pro | Decompiler | Professional reverse engineering (expensive) | | radare2 / Cutter | Disassembler/Decompiler | Command-line lovers, open source | | Binary Ninja | Decompiler | Clean UI, mid-range price | | objdump (GNU binutils) | Disassembler | Quick look, no decompilation |