@pert
Like others before me in this topic I have a Nano 33 IOT that is not recognised when connected using USB and will not go into bootloader mode with a double tap on the reset button
I have Uno, classic Nano, ESP32 and ESP8266 boards but I am unclear whether any of these can be used to burn the bootloader to the Nano IOT
Way back in post #2 you said
but the example Adafruit DAP library > flash_from_SD does not appear in the file list when Uno or Nano is selected as the board
The file does exist but copying it into the IDE and compiling for a Uno does not work because there is not enough memory
Can you offer any suggestions ?