ESP8266 Community Forum

- Mon Nov 10, 2014 5:26 am #2401 Bonjour ,

how to make backup actual firmware before upgrade ?

(chip ESP-01 )
AT+GMR
00150900

Thanks

- Mon Nov 10, 2014 5:29 pm #2451 I am not sure, but maybe esptool.py can do a dump.
now how good would that be I have no idea to be called a backup.

Generally speaking, with the SDK you can compile it again, or get a compiled already .bin file.
Unless you want the exact version that you have now, I don't know how to do it step by step.

- Fri Nov 14, 2014 3:47 am #2593 it's still important
like with smartphone : before update , backup !
nobody to help me ?

- Fri Nov 14, 2014 4:09 am #2594 You can directly read the flash. Desolder it first to be sure nothing interferes with reading it.

You can use a SPI flash programmer or the buspirate to read it.