Trying to downgrade.. from 7 to Lolipop.

[bunique]

I'm using the program called Odin, and it keeps failing everytime i press start. if anyone knows Ill send a screenshot.

 

[dynomot]

ODIN will fail. You cannot downgrade. This is true of all Samsung devices to my knowledge, indeed back in the day of the Galaxy S3 and S4 and early versions of ODIN it used to "hard brick" the phone (kill it permanently rendering it useless as anything but a brick or paperweight)