My ex galaxy s came with 3 buttons disabled. I brick it 3 times experimenting with the rom upgrades in a 14 day period. In all 3 occasions I sent in to SAMSUNG service center and they ref lash rom for me . I got phone back same day within 2 to 3 hours. And the service is free all the 3 time

I enabled the 3 button fix the last 2 time but still brick. Dunno why. anyway the centre superb service ref lash back for me