Warning: This is for educational purposes. Attempting a software downgrade on a retail PS4 above FW 5.05 will result in a BRICK (Error SU-42118-6).
If you have a NAND backup or a Teensy 4.1/BBB programmer, here is how the community uses the V100 tool for a "better" downgrade experience: ps4 tool downgrade v100 download better
Here is the hard truth: Any website offering a direct download link for a "PS4 Downgrader v1.00.exe" is 100% a virus or a scam. Warning: This is for educational purposes
These files are usually:
Real PS4 modding tools are Open Source and hosted on GitHub (like Ps4-USB-Kit or PPPwn). They are never a single ".exe" file. Real PS4 modding tools are Open Source and
The short answer is: Only if you have a specific hardware exploit.