The PS4 received the update 5.55 today, May 17, 2018. What is behind the new firmware?
The new firmware 5.55 is now available for download on the PlayStation 4. The update is a proud 490 MB in size.
You need to download and install it before you can play online again and use the online features of your console.

The installation process may take several minutes and is associated with a restart of your console.
What changes with the update 5.55?
The patch notes for the new firmware version are relatively straightforward. According to the change log, this system software update generally improves the system performance of your console.
Therefore, it is another update that tweaks the performance of your PlayStation. Sony is probably addressing the stability of the system again.
No major changes or new features that affect the gaming experience should be expected.
If you notice any further new features or changes to your PS4, let us know in the comments section!