Optiboot (an older version) is installed by default on the Arduino Uno and (as of 2018) official Arduino Nano boards. It can be installed on all older mega8, 168 or 328 based Arduinos. As of 2019, ...
Please note this repository has no support. I literally do not care about this project. This repo will never be updated. Don't bother opening issues or pull requests - I won't answer them. Feel free, ...