Of course I haven't confirmed this works. I'd probably test something like this on an esp8266-01. Take a snapshot of what's on it, upload some other firmware, then try restoring the original and see if it works.
Would this work to Backup and and later re-Flash original ESP8266 Firmware using esptool.py?
https://www.youtube.com/watch?v=PycRnjcXMRI
Also read about esptool.py here : -
http://tech.scargill.net/itead-slampher-and-sonoff/
Jim Legg
I have read lots about how to replace the original firmware and I might try some of these suggestions, but I really like the factory software and would want to restore it after my experiment. Someone please explain how to do this.
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