do you want to put a modchip in?....well flashing a modchip is simply putting on or changing the chips BIOS, bios is a basic input out system....it makes your chip do what it does....depending on the chip you have or are getting flashing the chip is very simple...for beginers the hard part is finding and burning the bios...do you know where to get bios for modchips...also if you already have a chip/getting one which is it?