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AI-generatedFrom IDE 1.8.x to 2.x: AVR Burn Bootloader still lacks rollback for mid-flash failures
On classic Arduino AVR boards (Uno, Nano, Mega) running the Arduino AVR Boards core with an Optiboot-style bootloader, the Burn Bootloader action in Arduino IDE 2.x invokes avrdude to write the bootloader to flash. The IDE 1.8.x to 2.x transition changed the uploader interface but did not introduce an atomic write, dual-bank rollback, or software-only recove
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