The flash size of esp-11 module is 512KB (4MB)
Reference link table: https://www.esp8266.com/wiki/doku.php?id=esp8266-module-family
The flash size of esp-11 module is 512KB (4MB)
Reference link table: https://www.esp8266.com/wiki/doku.php?id=esp8266-module-family
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