Not too long after the leak of the lv0 keys, Sony retaliated by unleashing a serious banhammer on anybody that was using some kind of custom firmware to sign into the PlayStation Network. As part of their terms of service, the company stopped not only the consoles from connecting, but also the accounts as well. The incident impacted such a widespread amount of systems that many have been left without any sort of internet fun since.
That is at least until 0x00 decided to end that for all of us. A few days ago, a method was released that involved the swapping of console IDs to sign in. However, this proved to be a slightly clunky method because as we all know, each ID can only be online for one specific console. Not only that, but many users also didn’t have an OFW or unbanned console to swap with. To reconcile this, two separate .pkgs have been released for 3.55 and 4.21 varieties. All you need to do is run the app, and you will be able to sign in to the PSN no problem.
Please do not however that this method only unbans your console, not your account. That means most of you will have to make a new account for this to work. Obviously methods like this can probably be patched easy enough, but for now this is a functional solution.