Flag Arduino mega/uno

Using Arduino Avrdude, stk500, Bootloader issues
1

Good morning,

Is there a way to flash Arduino from SD card, throw a command during the execution of a program?

Thanks

2

The words flag and flash seem to have got mixed up somehow

What is it exactly that you want to do ?

3

Maybe Run a sketch from an SD memory card can be of help.

Possibly more useful information in here: arduino bootloader load sketch from SD - Google Search

4

During the execution of a sketch. I want to reserve a button, which when it is pressed by user, Arduino flashing itself the .bin or .hex new code from sd card. Like an update. And not from usb cable and avrude.

5

This is substantially difficult, since the code to access as SD card is typically quite large compared to the typical bootloader size, at least for the smaller AVR Arduinos.
It might be possible on an Arduino Mega or ARM Arduino.

6

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