I factory reset bricked my phone as well. I followed these steps and it thankfully resolved the issue. I was provided these steps from a CSR and it also successfully reset the phone as well without bricking it:
Step 1:
1. Make sure the charger is disconnected.
2. Switch the power Off.
3. Press and hold the Volume down and connect the charger, if succeed an exclamation mark (!) is shown on the screen.
(To exit press the Volume Down + Power Key and hold them for 10 seconds).
Step 2:
Then input Keys in the following order:
1. Volume up
2. Volume down
3. Power
4. Volume down
Since the last reset via hardware buttons, I've successfully factory reset the phone through the "About" screen twice now.
