To quote: 3.56 Version Spoofer does exactly what it says and can restore back to 3.55 if needed. It was never intended to allow PSN access but to stop the system from updating to 3.56 (I made it shortly after KaKaRoToKS had his false alarm).
Once the PS3 is spoofed it will stay spoofed until it is uninstalled.
Press CROSS to INSTALL 3.56 Version Spoof
Press CIRCLE to UNINSTALL 3.56 Version Spoof
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for those of you that multiman stopped working, you will need to run lv2patcher before using multiman everytime, this is due to dean putting in a check to make sure you're on 3.55. So unless he feels like fixing it to work with this spoof that's what you'll have to do