The actual procedure is delicate and carries a high risk of "bricking" (permanently breaking) the console:
The most common reason. Certain firmware versions (especially 5.05, 6.72, 7.55, and 9.00) have known kernel exploits that allow homebrew apps, game backups, and Linux installation. Firmware 10.00 and above have no public jailbreak (as of this writing). Users who accidentally updated want to go back to a vulnerable version. downgrade tool ps4
These tools physically interact with the PS4’s motherboard, reading and writing the serial NOR flash memory that stores the bootloader and firmware version flags. The actual procedure is delicate and carries a
Understanding the motivation helps clarify why the market exists—even if it’s niche. downgrade tool ps4
