Plug the USB into the PS3 console (off), and then turn it on.Once the console has loaded, head to Settings – > System Update -> Update via Storage Media -> Proceed This should take around 10 minutes to complete.
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You should now be able to install custom firmware on your device. To do this, power off your console and remove the USB stick, and plug it into your computer.
PS3 Humble Homebrew Games for Windows 32-bit/64-bit (latest version 2021). CFW is available however only works on 3.55 and below.Ps3 ofw 3.55 downgrader download download#.Ps3 ofw 3.55 downgrader download install#.Ps3 ofw 3.55 downgrader download how to#.