How to solve the problem of endless updating?

Question

Android

There is an old Samsung Galaxy Grand Prime. Today, for no reason at all, he was impatient to upgrade without asking (supposedly). It was updated for a long time (more than an hour), after which someone (not me) cut it out in the middle of the update (which did not end in any way). After turning on the same story - it starts to be updated again and again endlessly. What to do? Is it possible to do without a hard reset? And if not, is there any way to save the data in advance?

Answer 1

Make a backup through the recovery and then restore.
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