All new Akai Japan sonicview files will have to be loaded shortly. Akai Japan will be moving every serial number to the new servers and you will no longer be able to connect using the old files unless you are on private.
This is great news from Akai Japan because now the Sonicview serials will be universal and work on all the Japan network receivers. (Sonicview, Limesat, Captivieworks)
If your system is still running on public then they have not changed everything over just yet. However when your public goes down on the old files you will need this file to get back on the Akai Japan Network.