user81222: I have designed a project using Arduino Every board which uses MCU Atmega4809 chip and I have used Arduino IDE for programming but now I am planning to design my custom board I have used schematics of Arduino every board available on Arduino website . how can i upload the bootloader (Where can I get the bootloader from ) and how can I upload the Arduino code on new Atmega4809 Chips.

user37622: Nano Every doesn't use a bootloader. The ATmega4809 on Nano Every is flashed with the SAMD11 used as UPDI programmer with Arduino firmware.
Optiboot supports ATmega4809 and MCUDude MegaCoreX supports different ATmega4809 configurations and Optiboot.

81222: <p>I have designed a project using Arduino Every board which uses MCU Atmega4809 chip and I have used Arduino IDE for programming but now I am planning to design my custom board I have used schematics of Arduino every board available on Arduino website . how can i upload the bootloader (Where can I get the bootloader from ) and how can I upload the Arduino code on new Atmega4809 Chips.</p>
 37622: <p>Nano Every doesn't use a bootloader. The ATmega4809 on Nano Every is flashed with the SAMD11 used as UPDI programmer with Arduino firmware.</p>
<p>Optiboot supports ATmega4809 and MCUDude <a href="https://github.com/MCUdude/MegaCoreX" rel="nofollow noreferrer">MegaCoreX</a> supports different ATmega4809 configurations and Optiboot.</p>
