How can you do the Stop Time cheat with Berserk and Assassin Rush and spade in Fable for PC

First you go to the sword in the stone, doesnt matter if you have already pulled it out, then go berserk and quickly save, then turn off xbox turn it back on then slow time, and go berserk again and then fart on your controller and spin in 3 circles in the game and then a genie will appear and whala u've done it.