Please HELP!!!! I need to go back to 2.1 or 1.6 to get my phone fixed... It was to risky to use the KDW updater method. Plus i don't know which file to use it with. Because my phone is optus australia. GT540G0 But after i updated to the illegal version it said GT540. So didn't know which one to choose. So does anyone know how to install stock rom using recovery??? THANKS IN ADVANCE!!!!!