firmware? anyone gotten verises,worms,invectedfiles,crashedcomp ect.

i want to update my m6 mini player but im not sure what to download.

i want to-

change background pics

read ebooks

have widgets

and have other cool things.

can someone tell me what the numbers next to the updates mean. i can't find what they mean.

is this safe? i obviously don't want to have to reload my computer and have to get another mp3 player.