I have a PSP 1000 or PSP (Phat) somebody told me they were the same. I recently updated it to 5.50 Gen - A (Full).

1. Now I need to upgrade to 5.50 Gen D3 to play God of War.
2. Is it possible to update directly from 5.50 Gen A to 5.50 Gen D3?
3. Please direct me to a very super noob friendly guide or give me instructions on how to perfrom the update without turning my PSP into a brick as you call it.
4. From a fellow gamer to another please help me. I need this.