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It is apparently possible to revert your PS4 to its previous firmware version, without any backup - Wololo.net
![Wololo on Twitter: "PS4 Syscon keys allegedly disclosed, could ultimately mean PS4 downgrade is possible https://t.co/beD9Qvy5eT https://t.co/XIsZeeI1pP" / Twitter Wololo on Twitter: "PS4 Syscon keys allegedly disclosed, could ultimately mean PS4 downgrade is possible https://t.co/beD9Qvy5eT https://t.co/XIsZeeI1pP" / Twitter](https://pbs.twimg.com/media/DlSUYz3V4AADSuT.jpg)
Wololo on Twitter: "PS4 Syscon keys allegedly disclosed, could ultimately mean PS4 downgrade is possible https://t.co/beD9Qvy5eT https://t.co/XIsZeeI1pP" / Twitter
![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
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