Which board should we use while uploading code to Arduino in interfacing.
@arorasimran006 You can select the type of board from Tools>Board from the dropdown menu. Have a look at this link below.
https://www.arduino.cc/en/guide/environment#toc9
If you are still facing issues, you can try to power off and reconnect the Arduino to the computer.
@arorasimran006 In the dropdown, you can select the type of board that you have. You can post any picture you have of the Bolt so that we can help you out.