dump firmware for from 0x0 ~ 0x4000#

this is how you can dump first 16Kbytes

based on this docs, its feel intresting look inside about rom

let’s dump it

openocd#

this tutorial uses secondary pico, which connected with other pico’s

openocd -f interface/cmsis-dap.cfg -f target/rp2040.cfg -c "adapter speed 5000"

after it

telnet localhost 4444
> halt
> dump_image pico_first_16kb_bootloader.bin 0x0 0x4000

show the binary

arm-none-eabi-objdump -D -b binary -marm -Mforce-thumb ./pico_first_16kb_bootloader.bin

let’s use GDB stuff, first download this, run as regular gdb debug mode + openocd. then dump

here the intresting part