You must use a hardware programmer (like a Teensy, Raspberry Pi, or specialized PS4 V tool) and perform micro-soldering to the syscon and NOR chips.
Many sites offering this download will hide the link behind "human verification" surveys. These are designed to generate ad revenue for the uploader and rarely, if ever, provide the actual file promised. Where to Find Legitimate PS4 Modding Tools
In the world of console modification, few phrases generate as much excitement—and as much confusion—as For years, PlayStation 4 owners have searched tirelessly for a magic software solution that would allow them to revert their console to an older, more exploitable firmware version. The promise is tantalizing: buy a used PS4 on the latest firmware, run a simple .exe file on your PC, and suddenly your console is back on version 1.00 or 5.05, ready for homebrew and backups.
If your goal is to run homebrew apps, back up games, or customize your console, downloading risky executable tools is unnecessary. Instead, stay informed on legitimate console exploits: