How to install 4.81 CFW from 3.55 OFW on your PS3! - YouTube
Tutorial - PS3 DumpChecker Support OFW 4.81 by littlebalup | Se7enSins Gaming Community
PS3 OFW 4.81 Game Backups Without CFW Guide - High Ban Risk | PSXHAX - PSXHACKS
Malaysia PS3 Jailbreakers - [RELEASE] PS3 STARBUCKS 4.81 COBRA 7.40 CFW Update by Habib CHANGELOG: 1. MADE OUT OF 4.81 OFW 2. HAVE INSTALL PACKAGE FILES AND APP_HOME 3. HAVE reActPSN COMPATIBILITY
PS3 OFW 4.81 and Cobra ODE using Swap Disc without DMC | Ps3, Call of duty ghosts, Swap