Hi, I want to update my ipad iOS system but the problem is I have lots of medical paid apps that I got from another person who bought them by them signing in and downloading it on my ipad. I can't lose these apps because they r very important And i need them in med school. I wanted to know if I update the ipad will I have to resign in for these apps to open,, of which I don't have the id and password or is it safe to update and these apps will stay intact the way they are
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Will i lose or have to resign in paid apps obtained using another id if I update my ipad iOS system?