# MacPorts (Mac OS X), developer installation, ***experimental***
<b><h3>These insturctions are not tested on Apple Silicon!</h3></b>
## Prerequisites
These instructions will show how to setup the environment on OSX to the point where you'll be able to clone and compile the repo by yourself, as on Linux, Windows, etc.
1. Have MacPorts installed. Visit https://www.macports.org/ for more information.
* MacPorts may require a bit more setup. Such as setting up new include environments like:
Now you're ready to follow the [compilation instructions](/doc/md/Use_of_Proxmark/0_Compilation-Instructions.md).
To flash on OS X, better to enter the bootloader mode manually, else you may experience errors.
With your Proxmark3 unplugged from your machine, press and hold the button on your Proxmark3 as you plug it into a USB port. You can release the button, two of the four LEDs should stay on. You're in bootloader mode, ready for the next step. In case the two LEDs don't stay on when you're releasing the button, you've an old bootloader, start over and keep the button pressed during the whole flashing procedure.
From there, you can follow the original compilation instructions.