Because I have seen the "horror" stories of people losing their jail breaks over this issue (and, remember, any future jail breaking of any iOS is a hope, not a given), may I just say this:
Do something in haste ... repent in leisure.
Impatient or not, are you willing to risk your jailbreak, perhaps forEVER - for one app?
Just want to add my caution in ... patience, Grasshopper!
OK, oh most wise one!! I will wait. It's not worth if for one app.