My new backups aint working....firmware?

Hey, i havent tried burnin any isos for few months.

just downloaded ufc and godfather.

burned them with CloneCd as i always have with no problem. with the .dvd file.

ok burn completes successfully. i put it in the 360 and it gooes to a white screen with Xbox360 the dvd player.


i dont know whats going on? ive wasted 2 blanks and i dont wana waste anymore im using Verbatims the best.

last time i burned some games was bout 4months ago they worked fine,

is it anything to do with teh firmware? im not sure what it is but its a new xbox or do i have to update it everytime a new one comes out?