You now have firmware.bin – raw machine code. But raw code is useless without understanding it.
Translating that raw binary into assembly language or high-level C code. Step 1: Converting UF2 to Binary
Before we go further, we need to clear up a common misconception. You cannot "decompile a UF2 file" for the same reason you cannot "un-zip a JPEG."
Before decompiling any UF2 file, ask: