Nope, there is no code, sorry. The best thing I can suggest is change the time to 2:59PM or 6:59PM as the shop restocks at 3PM and 7PM. This helped me get a UFO faster, cuz you don't wait HOURS for the shop to restock!!! Good luck!
so do u whant me to try and set the time for the time that the store restocks? well once i saw it in the shop but that was once but i did not have enough mony then but should i try to set the time again?
Yes, keep doing what you're doing now, and I'm sure you'll get it sooner or later (fingers crossed sooner!) Do that over and over again until you get it is the best thing to do.