ESP8266 Community Forum

(I'm loathe to use the words 'upload' or 'download' as they
seem to mean different things to different people here)

I'd like to do inverse of "esptool.py write_flash" to get
the working code OUT of a 8266 and save it to a .BIN
file on a host computer so that I could later write the BIN
file to (other) 8266s.

I fiddled with "esptool.py read_flash....." but couldn't find the
magical incantation that works.

Has anyone done this? Or is there a link/doc you can point me
to to accomplish this?

THANKS!

Where 0 is the start address and 4194304 is the size of the flash, here for a 4MB.

If you copy the .bin file to a pc, is there a way to get the code that is inside the esp8266? I need to get the whole script uploaded to a esp8266, i lost the original file.