Ps3 4921 — Hfw

If your PS3 is a CECH-300x , CECH-400x , or CECH-420x/430x , you cannot install full 4.92 Custom Firmware (CFW). You must use 4.92 HFW with PS3HEN .

—with an older version that contains a known, exploitable vulnerability. ps3 4921 hfw