It is a scam or a virus. Protect your PC, protect your PS4, and stick to established, community-verified sources like ps4homebrew.com or trusted Discord servers if you are looking to modify your console safely.
Some advanced users ask: "What if I restored a NAND backup from when my PS4 was on 5.05?" Ps4 Tool Downgrade V1.00 Exe Download
The version number "V1.00" is particularly misleading. It suggests a first, complete release—something no reputable PS4 hacker (like SpecterDev, TheFlow, or CTurt) has ever officially produced. It is a scam or a virus
If you download a file named PS4_Tool_Downgrade_V1.00.exe , you are downloading a Windows program. Usually, these are fake tools designed to do one of two things: It suggests a first
[Insert download link for PS4 Tool Downgrade V1.00 Exe]
According to various YouTube videos, sketchy forum posts, and pop-up-riddled download sites, this tool is described as: