The search for a "UF2 decompiler" is understandable. When you lose source code, panic sets in. But the correct mental model is this:
Several web-based tools allow you to upload a UF2 and download the binary payload. Step 2: From Binary to Source Code uf2 decompiler
A common question from curious developers and reverse engineers is: The search for a "UF2 decompiler" is understandable
Open the binary in Ghidra or IDA Pro. Map the memory addresses according to the chip's datasheet (e.g., Flash usually starts at 0x10000000 on an RP2040). uf2 decompiler