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Quick Guide ( MAC / Linux)

  1. Install ESP TOOL to ease flashing ESP (yes, that's python too :-) : 

First, make sure command line tools are installed on MAC OSX
xcode-select --install

Now, upload firmware to ESP via serial port (put your ESP in upload mode --> 
esptool.py --port /dev/cu.SLAB_USBtoUART --baud 115200 write_flash --flash_mode dio --flash_freq 80m --flash_size detect 0x1000 Downloads/esp32-bluetooth.bin 

That's done, you can connect now via any serial terminal  !
screen /dev/cu.SLAB_USBtoUART 115200

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