HFW-4.91.1-PS3UPDAT.PUP file is the official installer for PS3 Hybrid Firmware (HFW) version 4.91.1
: While primarily for exploitation, it includes the "minor stability and performance" improvements from Sony's official 4.91 update. Online Access HFW-4.91.1-PS3UPDAT.PUP
If you are updating to maintain your jailbreak or enable a new one, follow these standard steps: Prepare the USB : Format a USB drive to Create Folders : Create a folder named , and inside that, a folder named File Placement : Move the HFW-4.91.1-PS3UPDAT.PUP file into the folder and rename it exactly to PS3UPDAT.PUP The "HFW" in the filename stands for "Hybrid
HFW-4.91.1-PS3UPDAT.PUP is a system software update file designed for the PlayStation 3 console. The file contains the latest firmware updates, security patches, and feature enhancements for the PS3 system. The "HFW" in the filename stands for "Hybrid Firmware," which indicates that this update is a hybrid of the official firmware and a custom firmware. To install HFW 4
Go to Settings > System Update > Automatic Update and turn it off . This prevents Sony from quietly downloading OFW 4.92.
To install HFW 4.91.1 (Hybrid Firmware) on your PS3, follow this guide to prepare your system for homebrew like