PSN Offline - it can be
- Like any other Online service, the PSN fail. This is for a lot of users only partially, or not at all accessible. In this case, the console reports often the error code "NW-31201-7".
- The reason for the Downtime often technical errors in the process of maintenance work, or a great rush to the PSN Server. For example, a Release of new Software, which will generate many requests on the PSN can force the Server to its knees.
- Information about possible Downtimes and the reasons for them you can often find on the official PlayStation Twitter page.

Alternative Firmware Download Page
Tip: read what you can do if your PSN Download is unusually slow it is.