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It is apparently possible to revert your PS4 to its previous firmware version, without any backup - Wololo.net
![PS4 Downgrade to FW4.50 A few weeks ago, the developer VVildCard777 presented a theoretical method of lowering.. | VK PS4 Downgrade to FW4.50 A few weeks ago, the developer VVildCard777 presented a theoretical method of lowering.. | VK](https://sun9-63.userapi.com/impg/yegSgEcII11GZlwdZm4IexkX0BM_5EnyQXcVGA/h1AoTUqqmZI.jpg?size=369x655&quality=96&sign=e2395be3a722208866189cfede119901&type=album)
PS4 Downgrade to FW4.50 A few weeks ago, the developer VVildCard777 presented a theoretical method of lowering.. | VK
![PS4] Le premier downgrade réussi d'une PlayStation 4 - News et actualités postées sur LS - LS forums PS4] Le premier downgrade réussi d'une PlayStation 4 - News et actualités postées sur LS - LS forums](http://www.logic-sunrise.com/images/news/1110979/in-ps4-le-premier-downgrade-reussi-dune-playstation-4-2.jpg)
PS4] Le premier downgrade réussi d'une PlayStation 4 - News et actualités postées sur LS - LS forums
![Scena PS4] Downgrade possibile su console PlayStation 4 grazie al tool SYSGLITCH del developer wildcard – BiteYourConsole Scena PS4] Downgrade possibile su console PlayStation 4 grazie al tool SYSGLITCH del developer wildcard – BiteYourConsole](https://www.biteyourconsole.net/wp-content/uploads/PS4Update-7.jpg)