Nokia lumia 920 stuck on running gears.

I had a Nokia Lumia 920 stuck on running gears for more than 30min after a atempt of hard reset.
The way I found to resolve this problem was:

 I rebooted the phone by holding Volume Down + 

Power.  Then, when it was at the AT&T Screen I pushed 

the Volume up .The Gears spinned for about 2min. and 

then it rebooted to the "new phone" startup screen.

If works ,say thank you Ninja!

Hard reset (factory reset) BLU STUDIO 5.3S

Turn off the phone

Press VOL.UP and power

Hold VOL.UP you will see a green screen KEEP HOLDING until turns red than release

Menu will appear ,with the volume button scroll down to "wipe data/factory reset",select with power button

Scroll down and select "yes delete all user data" press power

Now select "reboot system now"
DONE.
If works ,say thank you Ninja!