It's Possible That Load HEX Code Of Program In EEPROM . When Want Load Program In Arduino. Main Arduino Connect With Other Arduino ,EEPROM And Push Button .when Press Button Main Arduino Take HEX Code From EEPROM And Load Program In Other Arduino By Main Arduino

External EEPROM Use For Burn Arduino

flashko September 19, 2021, 6:56am 3

Nick Gammon has a good guide here but uses a SD card.
https://www.gammon.com.au/forum/?id=11638

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