Dolfiemax

i already have the previous 4.2e release with neo gamma r7 and trucha on etc. but i havent sussed the boot from usb yet - what format do the files need to be in and do you need to convert them from wad files to bin etc. Also i cannot plat new scooby doo game through neogamma r7 just reboots to wii menu. And finally is this ok to just run over the 4.2e update as i saw somewhere in tut that it needs to be installed before 4.2 update - cheers.