Thanks guys!
Downloaded the firmware 5.55 The MD5 hash is: EE98BAEBCA4FEC9F9D9E85FDEB2CD0D0 and it matches! :)
My PS4 was basically collecting dust and I want to play new games now. Personally, it's the right choice and right time for me to move on. I will see how scene moves further to 6.XX...