Cannot figure out how to unbrick galaxy exhibit 2 4G

[Android Question]

For some reason i cant unbrick this phone have literally spent hours and every trick in the book! turns on to the samsung start up screen and will power on and off if left plugged in when i went to use odin everything went right on my phone screen and the computers untill the end when it reboots and then is when it goes back to a rooted phone. i have spent 20+ hours on this phone and finally gave up bought a new phone but why wont it unlock?

 

[Mr. Lucky]

There are many possible reason. Research "galaxy exhibit 2 boot loop" online. It could be anything from a stuck button, to a rogue app or failed update.