I put a new original FW version 5.40 with Updater.exe. WebUpdater constantly wants to install the new FW 5.40, but my device is already update with a new firmware 5.40...

Previously I had installed a modified firmware (Japan) on the device and delete many files...

What's wrong? What files can I delete, that WebUpdater not reported the need to download FW 5.40 ?