It is built on the 4.91 Official Firmware (OFW), meaning you keep full access to the PlayStation Network (PSN) and the latest Blu-ray playability.
have since been released. Always ensure your HFW version matches or exceeds your current official firmware version to prevent bricking or installation errors. HFW-4.91.1-PS3UPDAT.PUP
: The process is identical to a standard system update via USB. It is highly stable and does not carry the "bricking" risks associated with flashing a full CFW. It is built on the 4