Odin is a software that was first leaked back a couple years ago from Samsung. Samsung uses or used it to “flash” or “install” firmware,os,kernels,radio’s onto the devices. Samsung still uses it or a form of it in certain releases as a Window’s Upgrade Tool as its been known. Its still basically old Odin underneath a custom Window’s UI skin.

Odin 3.13.1 Features

• Remove the boot loop, app crash or application related other errors. If you meet with those matters the stock ROM flashing is a very useful to restore your smart mobile device back to working condition.
• Custom Firmware Flash can be done using this Odin application. Be careful with this firmware because flashing custom firmware may void your device’s warranty issues.
• Flash Recovery File instead of flash the whole ROM of the smartphone or the tablet PC.
• Flash Kernels of stock or custom firmware may help you to tweak performances of your Samsung smartphone.
• Root Package Flash to gain administrative privileges and become a superuser of the smart Samsung Android device as well.

Download Odin From Below Links by Version: 

Odin v3.13.1   Odin v3.12.3  Odin v3.10.7

How to Flash Samsung Devices using Odin See Here 

Credit: odindownload