There are two simple ways, one if you use Windows and one if you use Linux.
Windows User:
Download latest version of this free tool “physdiskwrite“, expand zip in a folder, and execute PhysGUI.exe:
I don’t understand a single word of this software, however, identify you device:
now, cover your eyes, and click with me:
a file browser opens and it invite you to select your image file, select and confirm image file writing.
Linux User:
I don’t know why Linux has all thing built in, however:
Unmout usb drive before run this command (I’ll call it here /dev/sdUSB):
unmount /dev/sdUSB
now expand image (.img file) with gzip commnad and write to usb with dd command:
gzip -c <imagefile> | dd of=/dev/sdUSB
Done, now unmount device and remove.