This should only be done as a last resort
Program Arduino Pro Mini Using Arduino Uno: Hello everyone. Today I am going to show how to program arduino pro mini using arduino uno.If you already had a arduino uno and you newly buy arduino pro mini then you don’t need to buy the USB to serial converter to program the arduino pro mini b.
![Dimensions Dimensions](http://www.alselectro.com/images/promini2.jpg)
Most likely your board isn't bricked, unless you have done something drastic like modified the fuses. In which case, reflashing the board probably won't help you.
However, if you have no options left and want to try to reflash the bootloader with an Uno or RedBoard. Here are links to some tutorial to get you started:
(*Make sure to upload the ISP sketch to the programming board. Also, tie the VCC pin to the 5V pin of the RedBoard or Uno. This will set the chip on the Pro Mini to 5V without having to worry about any logic level conversion. Lastly, be sure to double check the board options you are selecting so that the Arduino IDE uses the correct bootloader hex file.)