For standard users, there is simply no method to "undo" the 13.02 update. Attempting to follow online "downgrade tutorials" that claim to work via simple USB will lead to wasted time and potential confusion.
Sony enforces firmware restrictions using two primary hardware and software security layers:
To understand the difficulty, you need to understand how the PS4 handles updates. ps4 downgrade 13.02 to 9.00
Technically yes, but impractical for most users.
Let’s do the math:
Selling your PS4 on 13.02 and buying a pre-owned console on 9.00 is cheaper, safer, and faster than a hardware downgrade.
The story of "downgrading" a from firmware as of April 2026 is one of high-stakes hardware modification rather than a simple software update. There is no software-only "button" to go back; instead, the community relies on a process known as The Core Obstacle: Firmware Slots For standard users, there is simply no method
Reminder: You can downgrade your PS4 that you barely use anymore