The is a specific version of the system software used primarily for replacing a hard drive or performing a total factory reset while staying on a version that supports the 9.00 jailbreak exploit . Key Download Information

~460MB. Used for updating from a previous version.

Place the downloaded 9.00 reinstallation file into the UPDATE folder and rename it exactly to PS4UPDATE.PUP . 2. Boot PS4 into Safe Mode

~1GB. Used for new hard drives or complete system initialization.

You must create the following folders in all-caps: PS4 (Root folder) UPDATE (Inside the PS4 folder).

There are two types of firmware files. For a full reinstallation (recovery), you must use the larger file:

The PlayStation Support website currently hosts the latest firmware (e.g., 11.50+). To get 9.00 specifically, you must use reputable third-party archives like Softpedia or the Internet Archive . Step-by-Step Reinstallation Guide 1. Prepare the USB Drive Format: The USB drive must be formatted to FAT32 or exFAT .