To address the request for content on a "PS4 tool downgrade v100," it is important to clarify that "downgrading" in the PlayStation 4 community can refer to two distinct processes: reverting the console's system firmware to an older version or downgrading specific game versions to an earlier patch. 1. System Firmware Downgrading (Reverting)
| Starting FW | Downgrade Possible? | Method | Tool Name | | :--- | :--- | :--- | :--- | | 1.00 - 5.05 | | Software (Jailbreak + Update blocker) | PS4 Downgrader v1.1 | | 5.50 - 6.72 | Partial | Requires backup from same console | Recovery via Save Mounter | | 7.00 - 9.00 | No (without NOR mod) | Hardware (Teensy) | NOR Reader Writer v100 | | 10.00 - 11.00 | No | Impossible - efuses blown | None | ps4 tool downgrade v100 new
The version that was installed before your last update. To address the request for content on a