Samsung Odin or Odin3 is a very lightweight and easy-to-use stock ROM flashing tool for the Samsung Galaxy line of devices including Samsung smartphones and tablet devices. You can simply download Samsung firmware or firmware binaries, select the required fields in Odin and install new firmware or a custom recovery like TWRP (.tar) very easily. Whether you want to update your Samsung device manually, or fix a boot loop or install a custom recovery or kernel, Samsung Odin is a must-have tool.