How do I get to the upper ark?
One of the vendors in the new ark slums sells counterfeits
If you buy one and talk to lin lin in the massage place she'll notice you have a fake pass and tell you to talk to the tattoo guy for a better one. he'll charge you for it but afterwards if you have a perfect counterfeit you can combine any bad counterfeit with a pen at a player home table to make more.
After doing any of those steps you can use the pass any time keep in mind unless it's the perfect one you only have a chance for it to work whereas the perfect pass always works