The PS4 firmware update 2.0 "Masamune" is now happily spinning the gears of our consoles, but quite a few users are wondering why it's not possible to copy our MP3 files to the PS4's internal hard disk. Sony Product Planning Department Division 2 Manager Satoshi Hashimoto explained the reason in an interview on AV Watch.

This time the reason is is that we wanted to push out compatibility  from the USB storage as soon as possible. It's implementation is pretty lightweight.

If you want to save media files in the built-in hard disk, there are still a lot of things that will take more development time. Because of that, allowing that would have delayed the release of the feature. We need to consider development load, so please understand that we had to implement playback from USB storage first.

Of course we understand that demand. Please wait for it, since we're doing our best.

Hashimoto-san also explained that the company wanted to think a bit different than before by naming the update "Masamune." It's the first time that Sony discloses the internal code name of a system software update to the public, and it has been done because it's easier to remember than a number, and it communicates better and with more clarity the presence of new features.

Personally, I'm quite curious to see if Sony will continue to use the names of Japanese swords for future updates, Hashimoto-san declined to answer on that point, wanting to leave it to our imagination for now, but it would surely be interesting. Could "Murasame" be the next?