If the device is truly hard bricked, then chances are that they'll only run a basic test that it doesn't turn on. Once it fails that test, they'll probably send it to Samsung where they'll probably just swap out the broken hardware, completely wipe it if needed, and send it back as a refurb.

 

I actually did have to do this once, so I wouldn't worry. However if the device still turns on since it's only softbricked, I still wouldn't worry because the only thing they'll do is use Odin to flash the latest factory image, thus wiping out everything.

 

Just make sure to keep your return receipt in a safe place, and watch you account for them charging you because you didn't return the defective unit. I've had it happen before where the claim that they didn't receive a returned phone even when the tracking info shows it accepted by them.

 

even if you could reset it, its still possible for someone to recover data from it so theres no point worrying. Lifes too short