You're looking for information on downgrading a PS4 from a higher firmware version to version 1.00 and installing a tool.
: You must have a "Syscon" backup from the previous version or use a hardware flasher like the ps4 tool downgrade v1 00 install
To use the PS4Tool, you would typically need: You're looking for information on downgrading a PS4
When the PS4 launched in November 2013, it shipped with . This firmware had several security flaws that were patched in later updates (1.01, 1.50, 1.70, etc.). Most notably: consider looking into more recent projects
If you're interested in exploring homebrew or custom firmware on your PS4, consider looking into more recent projects, such as: