Memory Unit Issues

I was having trouble opening apps about a week ago. After chatting with support, we rolled back/reinstalled the latest system update which fixed the problem for a few days. However the issue popped up again. I tried the same solution but the Xbox won't reinstall
the system update or delete any files. In fact, anything I delete or change reappears the next time the system is restarted including trying to format the memory unit.

Has anyone had this issue before? Anything else I can try before I give up? Xbox is 2 months outside warranty....

:)

 

Memory Unit

I recently went to a friend's house to play Diablo 3, but I forgot to save my toons onto a memory unit. When I get there, of course I have to start a new toon, and my friend lets me borrow a flash drive to save my new toon on.

Is there any way possible to merge my two save files together?

When I go to move the save from the memory unit, it says that there is already a save and it prompts me to overwrite my save file on my HDD, which I do not want to do that. When I try and copy my save from the memory unit, it says that I can not copy the
file and asks me if I want to move it.

Any information would be helpful.

 

Memory Unit

Its either one or the other, you cannot merge the two.