The PS4 1302 UPD refers to firmware version 4.05, which was released in April 2017. This update was relatively minor, focusing on stability improvements and bug fixes. However, for those interested in downgrading, version 1302 (or 4.05) has become a popular target.
The only proven way to downgrade a PS4 involves complex hardware modification. This process is known as the "Syscon Revert." ps4 downgrade 1302 upd
To mitigate this vulnerability, Sony has released a patch (Update 1401) that fixes the validation mechanism and prevents the downgrade attack. Users are advised to update their PS4's firmware to the latest version to prevent exploitation. The PS4 1302 UPD refers to firmware version 4
Write the modified data back onto the console chips, clear any hardware error codes via a UART connection, and boot the console. Technical Comparison: Software vs. Hardware Revert Software "UPD" File Hardware Firmware Revert Feasibility Completely Impossible Verified & Working Requirements USB Flash Drive Micro-Soldering, SPI Flasher, PC Max Rollback Distance Exactly 1 previous firmware version Risk Factor Low (File simply fails to install) High (Permanent motherboard bricking if done wrong) Primary Use Case Clickbait / Ad-revenue scams Recovering a jailbreakable firmware Current PS4 Jailbreak Status (As of May 2026) The only proven way to downgrade a PS4
The update, released in October 2025, is primarily a security-focused patch aimed at closing vulnerabilities used for system exploits. There is no legitimate software-only "upd" file or method to downgrade from version 13.02 to a lower, jailbreakable firmware . PS4 Firmware 13.02 Overview