Sony released PS3 Firmware 3.15 last month, but it was not compulsory that you downloaded it. However, upon switching my PlayStation 3 on this morning, I found that it is now mandatory. If you do not need to use any of the new features, it does not matter, you still need to download and install the update.
According to inquisitr.com, The new firmware is not a massive one, so does not come with many new features. However, you will now be able to play PSP minis games on your larger flat screen TV. You will also be allowed to transfer data between your PlayStation 3 consoles.
The new feature is called Data Transfer Utility; this allows you to connect two PS3 consoles via LAN, you will then need to connect both to your TV. The next step is to turn both consoles on, making certain that both have the new firmware installed.
The next step is to go to the XMB on the PS3 and then select Data Transfer Utility in the systems settings category. All you then need to do is follow the onscreen instructions. For more details visit blog.us.playstation.com.
Let us know if you managed to download the update without any problems.