Syntax errors

[jon65]

success at last, have created a backup of the flash using

esptool.py --port COM5 --baud 115200 read_flash 0x000 524288 backup.bin

thanks everyone for their help!!

my next questions are
will the backup.bin file have everything on the chip or just what was at 0x000? do I need to copy more addresses (what would they be?)
how do I know if 524288 is the right memory size

thanks again for your help sofar