Buffalo WHR-600D Router Firmware 1.40

Fixes:
- Fixed the problem of bridge mode sometimes being incorrectly detected while in auto mode.
- PPPoE connections are now reestablished automatically after the AirStation reboots.
- Fixed the problem where the SSID was not broadcast after the AirStation was awakened from eco mode with the AOSS button.
- Corrected some typos in Settings.
- PPPoE connections are now disconnected automatically when the firmware is updated online.
- Fixed the problem of bandwidth being automatically configured to 20 MHz in 40 MHz networks.
- The AirStation now connects to the Internet correctly when SSID isolation is enabled.