It works for me on 10.1.0. The sigpatches arent your issue.
Boot to rcm, hold volume up and down. Inject fusee and continue holding volume while it loads. It should load to maintenance mode. If it didnt then you let go too early. after that reboot to cfw and try the game again.
You say, the sigpatches arent your issue. I have installed the game 10.1.0 but it dosent start up.. ? what are you doing different than me?