Should you update to 7.55? Here's a video covering Step-by-Step how to Update & Jailbreak on 7.55. Detailed testing of Exploit Host on the Jailbreaking Experience with 4 different Hosts.
Highly recommend checking it out before deciding to Upgrade

 

[Maupiti]

On m’y opinion, the 2 best FW for hacking on PS4, are 5.05 and 9.00