You don't need ARCH spoofer (never even heard of it tbh) lol, all you need is the
You must login or register to view this content.. Install it and and run the homebrew app. In the main menu, hit Square, there should then be a button titled "Enable SEN Access", hit square again. You should now see "PSN/SEN access enabled successfully \ Do you want to reboot? \ WARNING: If you don't reboot your PS3 system will be unstable". You should now be able to access PSN.
Words of warning: Disable CFW calls with a homebrew such as
You must login or register to view this content. (just go into psnpatch and hit "X"). You will eventually get banned going online, it's just that it can take longer to be banned depending on your luck and what you do really.