Is any form of downgrade actually possible? Yes, but not the way you think. None involve a magical v100 exe.
Short answer: No true software-only downgrade exists for retail PS4 consoles after a certain hardware revision (CUH-20xx and later).
Here’s why:
What the EXE files actually are: Most files labeled as "PS4 Downgrade Tool v100 EXE" fall into these categories:
You have three options. Choose wisely.
You download PS4_Downgrade_Tool_v100.exe. You run it on your Windows PC. Nothing happens, or a fake error says "PS4 not connected." In the background, that EXE has now:
Sony implemented a hardware-based anti-rollback system. Each time you update, a tiny electronic fuse inside the Southbridge chip is physically blown. The number of blown fuses corresponds to the firmware version. You cannot "un-blow" a fuse. Therefore, a software EXE cannot magically revert a physical fuse. ps4 tool downgrade v100 exe download work
Firmware 10.00 (released September 2022) was a major update that patched many exploits. Users who accidentally updated from 9.00 (the last fully exploited firmware) to 10.00 lost the ability to run homebrew.
The "v100" in your search refers to Firmware 10.00. People want a tool to roll back from 10.00 to 9.00. As of 2025, there is no software-only downgrade from 10.00 to 9.00. The hardware fuse count prevents it. Is any form of downgrade actually possible
Even if a new exploit is discovered on 10.00, you cannot downgrade to 9.00. You can only jailbreak 10.00 directly (if an exploit exists). Currently, the only public jailbreak for higher firmwares is limited (e.g., PS4 11.00 has a PPPwn exploit, but again, no downgrade to 9.00).
No reputable PS4 homebrew developer (e.g., Al-Azif, Sleirsgoevy, LightningMods, EchoStretch) has released a tool named "downgrade v100." This name pattern is common in fake software. Legitimate PS4 tools are open-source and hosted on GitHub, never distributed as random EXE files from file-sharing sites. What the EXE files actually are: Most files