user34223: I want to flash a hex file stored in a micro SD card into an Arduino [Uno/Nano]. So far I can read and write to the SD card using Arduino.
Without modifying the bootloader, is it possible to flash the Arduino using micro SD card module?

user2881: No. Only the bootloader is allowed to write to the program flash.

34223: <p>I want to flash a hex file stored in a micro SD card into an Arduino [Uno/Nano]. So far I can read and write to the SD card using Arduino.</p>

<p>Without modifying the bootloader, is it possible to flash the Arduino using micro SD card module?</p>
 2881: <p>No. Only the bootloader is allowed to write to the program flash.</p>
