4.55 has more games. 4.05 is more stable HEN (maybe)
Not exactly, with a patch applied to the fpkg or spoofing the version you can run all the games that you can dump on FW 4.55 with FW 4.05. I don't know a single disc dumped that doesn't work with FW 4.05 (i.e. all the games dumped where developed with an SDK lower than 4.05).
Even so why bother to go to the trouble?
These is not the place to put these but u should look for model of the console to, s01-xxxxxx and the model cuh 7016B or Ahi who with CUH 2016 A or CUH 2016 B is 100% sure that OFW is 4.55 or niche
Thank you for answering