The Upgrader is completely rigged
The upgrader is completely rigged. And no, I am not talking from one or two failed attempts. I have taken count and a total of 23 failed upgrades in a row, all on under, and right after, chose over, guess what, failed again (Usually on 75% of win aswell by the way). Just don't use the upgrader, it is rigged against you and you will not win unless you make them money. All there is to it.