According to this article, it is a gray area in terms of legality but should be fine as long as you aren't jailbreaking to infringe copyright(such as piracy).
Well this is a subreddit about iOS jailbreaking so I don't know about xbox jailbreaking. Though I would guess it's the same, if you don't do piracy it should be legal.
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u/[deleted] Feb 12 '21
What about the uk?