Ask PlayStation UK on Twitter: "@zzZunkn0wnZzz So just to confirm, the installation went ok, was done, and then the console went into a loop and requested it again? ^NL" / Twitter
How to Boot Up a PS4 in Safe Mode
Is Your PS4 Stuck in Safe Mode? Get It Fixed Now
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How to Get a PS4 Out of Safe Mode: Fix a Safe Mode Boot Loop
How to FIX PS4 Safe MODE LOOP! (5 BEST METHODS) (2019 Help Tutorial) - YouTube