Just to clear things up....if you reboot your ps4 and you see the padlock on your games you need to turn on mira exploit again so repeat these steps every time you reboot your ps4...
5. open user manual or internet browser if you have that set up
6 select 5.05
7. select mira or mira+hen
It depends if you really want to spend money on games now that there is so much going on in ps4 jailbreaking scene.....if i were you i would wait at least another month and see if there is any progress with 5.5x exploits.....