The clue to get your hands on the Fortbyte 97 of the decryption challenge can be found if you search a clue within loading screen number 8.
The clue says: "Peely and Jonesy first met at Bao Bros and instantly knew they would be friends forever".
Head to the Bao Bros, this is the restaurant located north of Lucky Landing. It is recognizable by its large sign turning on its roof and representing a bao (a traditional stuffed bread in Chinese cuisine). Take the stairs and go up to the first floor of the restaurant to find the Fortbyte.