Alternative bootloader : load sketch from SD card

Hi,

I know that a bootloader that load sketch from an SD card already exists for ATmega328p. Do you think it is possible to do something similar for the SAMD21 ? It would be amazing! :D

Possible is possible, why not... there are also plenty of SD libraries around...

The question is: who is going to invest time on it to make it happen... ;)

I've found the SAMD20 SD bootloader documentation and code, but I can't understand how it exactly works... Maybe someone here would invest time to merge it with the actual bootloader to add SD functionality :D

Maybe this could help: https://forum.arduino.cc/index.php?topic=407444.0