Written by Sev1512 
Users outside of Japan will not be prompted to update before being able to sign in to the PlayStation Network, so you may not notice this most recent update. However, if you head over to System Update, 2.43 will be available to download. What does it do? Nothing, unless you live in Japan. What does for PS3 users in Japan? Nothing has been revealed as of yet.
Here is the official word on firmware 2.43:
Unlike previous updates, firmware v2.43 is specific to the Japan region, and only PS3 users there will be required to
install the update. PS3 users in all other regions will not be prompted to download v2.43. However, if you manually initiate a firmware update by clicking on “System Update” under the XMB’s Settings icon, the v2.43 update will be available, regardless of where you are located.Users outside of Japan do not need to perform this update if your PS3 system software is on version v2.41 or later. However if you do perform the update, it will not cause any issues with your system or add any new functionality.
Click READ MORE for the UPDATE
Translation from jp.playstation.com tells us:
PLAYSTATION ® Store in Japan region, a rental basis to respond to the content download additional features. September 24 (Wednesday) from the animated feature, the user game for everyone to enjoy the title of carefully selected high-quality, limited time available audience, you can download a rental basis.
This means its basically an update for the Japan Store so users can rent Anime episodes. For more information click HERE
