restoring to 5.3?

Hey, new here and I was just wondering is it possible to restore apple tv 3 to 5.3 and then jailbreak it using seas0npass?

If so how? 

No - there is no current jailbreak for the Apple Tv 3.

I know that, but i’m saying restoring it to 5.3 won’t do anything? 

All that will do is get it onto 5.3 firmware! Since you cannot jailbreak it I cannot see any advantage over being on the 6.x series firmware.