Menuhax should work.
With that, you could follow Plailects guide to get A9LH installed if you want to.
https://github.com/Plailect/Guide/wiki/Part-1-(Homebrew)
Seeing you're on 9.9, it could be that you can utilize browserhax as well.
Try again, try to do it faster.I've tried using browserhax to get onto homebrew, but the nag message always pops up. I've tried yellows8's browser check bypass but I seem to be getting the message as soon as I start the browser even after changing the date-time.