>>8831540The Pen 20 board has points that when connected correctly determine the version, for example nothing connected is Silver/Black, while JP2 connection is Silver/Blue. You can do it with any device, but Silver/Black is easiest because it has no previous connections, trying to do it with any of the others requires you to break the initial connection. You can make temporary connections to perform a version switch while still loading your previous data, thus allowing you to get that versions eggs in addition to the ones you had previously. You can repeat that method for all versions until your save contains all eggs. There is a detailed guide somewhere, just try searching "Pendulum 20th all eggs" or something similar. It's also possible to wipe your save while trying to do this, so anyone who attempts it should be careful.