I grow both Upgrade and Purple Cheetah. For me, Purple Cheetah is a better performer, but Upgrade has more consistently cool blooms. Thus "Upgrade", I guess.`
It took a long time for me to they Upgrade going. I think maybe I just got a single fan. It was a bonus plant, so I wasn't complaining. I was lucky to have it. But after my 2nd summer without scapes, I moved it to another location, and it has been going much better. It gets sun almost all day, but the garden has more competition that the one it struggled in. So try more sun if it's struggling for you.
I don't have a current picture of it. Here's one from when it was in the garden that wasn't making it happy. I'll try to remember to update this thread when it blooms this summer.
edit: I should point out that the other garden it didn't like, it was right next to Purple Cheetah which grew there extremely well. Go figure.