Welcome on my website, this website has been created by Guillaume MrNiato an his goal is to bring news about playstation hacks and more precisely the Playstation 4 . On the website you will find some useful informations about all the public jailbreaks released from firmware 1.01 to 5.07 and take a look at the upcoming jailbreak that may happen in a few months or years.
FAQ about the Playstation 4 hacks
So, if you want to downgrade from 5.55 to 5.05 it won't be possible at the moment.
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