# 4. Run optimization optimize_ir(ir_module)
For microcontrollers like the Raspberry Pi Pico (RP2040), the community has developed specific extraction tools. The picotool command-line utility can inspect and extract binaries directly: picotool save -f input.uf2 output.bin Use code with caution. Step 2: Choosing and Configuring Your Decompiler
The tool is frequently extended by the community; for example, versions exist that handle multiple binary inputs and pad content appropriately for specific bootloaders like the RP2040's. uf2 decompiler
Rare, but some commercial products encrypt the payload. Look for high entropy (randomness). You’ll need the encryption key from the bootloader—often impossible without hardware attacks.
void reset_handler(void) uint32_t *src = &_sfixed; uint32_t *dst = &_data_start; while (dst < &_data_end) *dst++ = *src++; // ... call main() Step 2: Choosing and Configuring Your Decompiler The
Once we have the blocks, we sort them by address and dump the contiguous memory space into a raw .bin file. Congratulations. We just "decompiled" the container. But the firmware is still encrypted (by obscurity) and binary.
Now, extract the raw binary data. The most universal tool for this is Microsoft's uf2conv.py . You’ll need the encryption key from the bootloader—often
void _start(void) // Cleared BSS // Copied data from flash to RAM // Called main()