There is no "one-click" software tool that can downgrade your PS4 firmware. Sony uses security measures, such as internal flash memory that tracks the current and previous firmware versions, to prevent users from reverting to older software for the purpose of jailbreaking.
A legitimate process called "reverting" exists, but it requires physical hardware modifications . It involves soldering wires to the console's Syscon and NOR chips to switch between the two firmware slots the PS4 naturally keeps on its motherboard (the current active one and the one immediately prior). ps4 tool downgrade v100 exe download patched
Legitimate downgrading—referred to in the modding community as "reverting" There is no "one-click" software tool that can
Any .exe claiming to downgrade a retail PS4 by just running it on a PC is almost certainly . ps4 tool downgrade v100 exe download patched