Hacking problem with sizes and pictures

[mr. fancypants]

hi guys

i have a question is it possible to trim a wii iso so i can burn it onto a disc

cuz

my usbloader gx wont load ( it says that there is like 0.81 gb free from the 3.7 gb) but it doesnt show the game pictures i tried everything like formatting the usb and redownloading the isos and put the on the usb using fbsw (or something like that) the first three months it worked perfectly but now it wont work anymore

so thats why i cant usbloader gx (and neogamma and wiiflow) anymore

ps already tried different usb-sticks