...I know Loadiine doesn't have USB access, but why it need a IOSU exploit to work? Wup Installer from Dimok has a USB install option ... it should be possible to add USB acess to Loadiine?
Let's say you give a TV to a friend for their birthday. You can tell them "Here is a TV. I want you to install it in your bedroom." or "Here is a TV. I want you to install it in your living room." You've provided the TV, but you're not doing the installation, and you don't need access to either room in order for it to end up where you wanted it.
Your friend may someday invite you into their house to watch the TV, but unless you break into the house while your friend is away, you won't have full access to that TV, and you'll have to watch
what your friend wants you to see,
when he wants you to see it.
If that makes sense, you can understand how WUP Installer could ask the system to install the update to USB without actually having access to USB. The system is still in control of its house. (And in case you think it hasn't already been tried, No, you can't put a pizza in the TV box and convince the system to mount the pizza on the wall in the bedroom.

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